Fix docker and colima install in CI (#1556)

* [GHA/io_integration_test] run brew update before brew install

* [GHA/io_integration_test] execute CI on this branch

* [GHA/io_integration_test] fix python link error.

* [GHA/io_integration_test] run on all branches

.github/workflows/ios_integration_test.yml

@@ -94,7 +94,10 @@ jobs:
         run: .flutter/bin/dart run melos yarn-build
 
       - name: Start colima a docker runtime for MacOs
+        # Work around an upstream issue with the runner image:
+        # https://github.com/actions/runner-images/issues/8500
         run: |
+          brew upgrade || brew link --overwrite python@3.11
           brew install docker
           brew install colima
           colima start