update flask in codelabs (GoogleCloudPlatform#3394)

leahecole · gcf-merge-on-green[bot] · web-flow · commit 62a1da2d9e41 · 2020-04-14T13:15:15.000-07:00
Co-authored-by: gcf-merge-on-green[bot] &lt;60162190+gcf-merge-on-green[bot]@users.noreply.github.com&gt;
diff --git a/codelabs/flex_and_vision/requirements.txt b/codelabs/flex_and_vision/requirements.txt
@@ -1,4 +1,4 @@
-Flask==1.1.1
+Flask==1.1.2
 gunicorn==20.0.4; python_version > '3.0'
 gunicorn==19.10.0; python_version < '3.0'
 google-cloud-vision==1.0.0
