Bump pip from 18.1 to 19.2 in /utils/google_app_engine (#3561)

Bumps [pip](https://github.com/pypa/pip) from 18.1 to 19.2. - [Release notes](https://github.com/pypa/pip/releases) - [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst) - [Commits](https://github.com/pypa/pip/compare/18.1...19.2) --- updated-dependencies: - dependency-name: pip dependency-type: direct:production ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bump pip from 18.1 to 19.2 in /utils/google_app_engine (#3561)
c6deb73a · dependabot[bot] · GitHub · 4ef92618 · c6deb73a
--- a/utils/google_app_engine/additional_requirements.txt
+++ b/utils/google_app_engine/additional_requirements.txt
 # add these requirements in your app on top of the existing ones
-pip==18.1
+pip==19.2
 Flask==1.0.2
 gunicorn==19.9.0