fix: upgrade pip to latest version if available (GoogleCloudPlatform#9886)

engelke · web-flow · commit 85a730ca39dc · 2023-05-03T20:42:12.000Z
## Description

Fixes occasional pip install problems.
diff --git a/.kokoro/tests/run_tests.sh b/.kokoro/tests/run_tests.sh
@@ -87,6 +87,9 @@ cd "${PROJECT_ROOT}"
 # add user's pip binary path to PATH
 export PATH="${HOME}/.local/bin:${PATH}"
 
+# upgrade pip when needed
+pip install --upgrade pip
+
 # install nox for testing
 pip install --user -q nox
 
