* chore: Add header checker config to python library synth

Now that we have it working in [python-docs-samples](https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/.github/header-checker-lint.yml) we should consider adding it to the 🐍 libraries :)

Source-Author: Leah E. Cole <6719667+leahecole@users.noreply.github.com>
Source-Date: Mon Jan 25 13:24:08 2021 -0800
Source-Repo: googleapis/synthtool
Source-Sha: 573f7655311b553a937f9123bee17bf78497db95
Source-Link: googleapis/synthtool@573f765

* chore: add noxfile parameters for extra dependencies

Also, add tests for some noxfile parameters for assurance that the
template generates valid Python.

Co-authored-by: Jeffrey Rennie <rennie@google.com>

Source-Author: Tim Swast <swast@google.com>
Source-Date: Tue Jan 26 12:26:57 2021 -0600
Source-Repo: googleapis/synthtool
Source-Sha: 778d8beae28d6d87eb01fdc839a4b4d966ed2ebe
Source-Link: googleapis/synthtool@778d8be

Add constraints file to test lower bounds. These files will not be used until the noxfile is changed in googleapis/synthtool#869.

* build: migrate to flakybot

Source-Author: Justin Beckwith <justin.beckwith@gmail.com>
Source-Date: Thu Jan 28 22:22:38 2021 -0800
Source-Repo: googleapis/synthtool
Source-Sha: d1bb9173100f62c0cfc8f3138b62241e7f47ca6a
Source-Link: googleapis/synthtool@d1bb917

* chore(python): include py.typed files in release

A py.typed file must be included in the released package for it to be considered typed by type checkers. https://www.python.org/dev/peps/pep-0561/#packaging-type-information. See #79

Source-Author: Bu Sun Kim <8822365+busunkim96@users.noreply.github.com>
Source-Date: Fri Feb 5 17:32:06 2021 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 33366574ffb9e11737b3547eb6f020ecae0536e8
Source-Link: googleapis/synthtool@3336657

* docs: update python contributing guide

Adds details about blacken, updates version for system tests,
and shows how to pass through pytest arguments.

Source-Author: Chris Cotter <cjcotter@google.com>
Source-Date: Mon Feb 8 17:13:36 2021 -0500
Source-Repo: googleapis/synthtool
Source-Sha: 4679e7e415221f03ff2a71e3ffad75b9ec41d87e
Source-Link: googleapis/synthtool@4679e7e

Source-Author: Bu Sun Kim <8822365+busunkim96@users.noreply.github.com>
Source-Date: Wed Feb 17 14:10:46 2021 -0700
Source-Repo: googleapis/synthtool
Source-Sha: d17674372e27fb8f23013935e794aa37502071aa
Source-Link: googleapis/synthtool@d176743

…75)

Source-Author: arithmetic1728 <58957152+arithmetic1728@users.noreply.github.com>
Source-Date: Tue Mar 2 12:27:56 2021 -0800
Source-Repo: googleapis/synthtool
Source-Sha: 0780323da96d5a53925fe0547757181fe76e8f1e
Source-Link: googleapis/synthtool@0780323

* changes without context

        autosynth cannot find the source of changes triggered by earlier changes in this
        repository, or by version upgrades to tools such as linters.

* feat: added expire_time and ttl fields to Secret

PiperOrigin-RevId: 352563582

Source-Author: Google APIs <noreply@google.com>
Source-Date: Tue Jan 19 07:29:20 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 9ecdacc9a00e1dd443b11bf10215d6e7648db8a7
Source-Link: googleapis/googleapis@9ecdacc

* chore: upgrade gapic-generator-python to 0.40.5

PiperOrigin-RevId: 354996675

Source-Author: Google APIs <noreply@google.com>
Source-Date: Mon Feb 1 12:11:49 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 20712b8fe95001b312f62c6c5f33e3e3ec92cfaf
Source-Link: googleapis/googleapis@20712b8

* chore: update gapic-generator-python

PiperOrigin-RevId: 355923884

Source-Author: Google APIs <noreply@google.com>
Source-Date: Fri Feb 5 14:04:52 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 5e3dacee19405529b841b53797df799c2383536c
Source-Link: googleapis/googleapis@5e3dace

* chore: remove non-existent package option in java_gapic_library rules for cloud APIs

Committer: @miraleung
PiperOrigin-RevId: 356328938

Source-Author: Google APIs <noreply@google.com>
Source-Date: Mon Feb 8 12:39:42 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 78e0057d81c6969507bf1195b5aad8ac3e7feafd
Source-Link: googleapis/googleapis@78e0057

* feat: added topic field to Secret

PiperOrigin-RevId: 359285402

Source-Author: Google APIs <noreply@google.com>
Source-Date: Wed Feb 24 07:59:50 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 8b3d36daaf5561496b7d4075fba4f2c52d18ca1c
Source-Link: googleapis/googleapis@8b3d36d

* chore: update gapic-generator-python to 0.40.11

PiperOrigin-RevId: 359562873

Source-Author: Google APIs <noreply@google.com>
Source-Date: Thu Feb 25 10:52:32 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 07932bb995e7dc91b43620ea8402c6668c7d102c
Source-Link: googleapis/googleapis@07932bb

* chore: upgrade gapic-generator-python to 0.42.2

PiperOrigin-RevId: 361662015

Source-Author: Google APIs <noreply@google.com>
Source-Date: Mon Mar 8 14:47:18 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 28a591963253d52ce3a25a918cafbdd9928de8cf
Source-Link: googleapis/googleapis@28a5919

🤖 I have created a release \*beep\* \*boop\*
---
## [2.3.0](https://www.github.com/googleapis/python-secret-manager/compare/v2.2.0...v2.3.0) (2021-03-11)


### Features

* add topic field to Secret ([#80](https://www.github.com/googleapis/python-secret-manager/issues/80)) ([f83c035](https://www.github.com/googleapis/python-secret-manager/commit/f83c03517a7d32f5f53ea5511c41b855ab955eae))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).