chore(deps): update dependency google-cloud-billing to v1.6.0 (GoogleCloudPlatform#7917)

renovate-bot · leahecole · web-flow · commit 2e911464f2a8 · 2022-05-19T13:17:23.000-04:00
Co-authored-by: Leah E. Cole &lt;6719667+leahecole@users.noreply.github.com&gt;
diff --git a/billing/requirements.txt b/billing/requirements.txt
@@ -1 +1 @@
-google-cloud-billing==1.5.1
+google-cloud-billing==1.6.0
