refactor(ci): use custom action for checking codegen status (#5493)

.github/actions/ensure-codegen-updated/action.yml

@@ -0,0 +1,16 @@
+name: 'Ensure codegen is updated'
+description: 'Will check the local filesystem against git, and abort if there are uncommitted changes.'
+
+runs:
+  using: "composite"
+  steps:
+    - shell: bash
+      run: |
+        if output=$(git status --porcelain) && [ ! -z "$output" ]; then
+          # See https://unix.stackexchange.com/a/155077/378179.
+          echo 'There are uncommitted changes:'
+          echo $output
+          exit 1
+        else
+          echo 'All good!'
+        fi

.github/workflows/build-and-test.yml

@@ -48,15 +48,7 @@ jobs:
             **/build/test-results/test/**
             **/junit.*.xml
       - name: Ensure codegen is updated
-        run: |
-          if output=$(git status --porcelain) && [ ! -z "$output" ]; then
-            # See https://unix.stackexchange.com/a/155077/378179.
-            echo 'There are uncommitted changes:'
-            echo $output
-            exit 1
-          else
-            echo 'All good!'
-          fi
+        uses: ./.github/actions/ensure-codegen-updated
       - name: Slack failure notification
         if: failure() && github.event_name == 'push'
         uses: kpritam/slack-job-status-action@v1

.github/workflows/metadata-io.yml

@@ -51,15 +51,7 @@ jobs:
             **/build/test-results/test/**
             **/junit.*.xml
       - name: Ensure codegen is updated
-        run: |
-          if output=$(git status --porcelain) && [ ! -z "$output" ]; then
-            # See https://unix.stackexchange.com/a/155077/378179.
-            echo 'There are uncommitted changes:'
-            echo $output
-            exit 1
-          else
-            echo 'All good!'
-          fi
+        uses: ./.github/actions/ensure-codegen-updated
 
   event-file:
     runs-on: ubuntu-latest