ci: Stop using kitek/dartanalyzer-annotations-action

The dartanalyzer has a bug when excluding files that have been around
for a long time now, and since it is now deprecated in flavour of `dart
analyze` it is very unlikely to be fixed any time soon.

Since this action uses dartanalyzer and we need to exclude mocks, we
can't use it anymore.

dart-lang/sdk#25551

.github/workflows/ci.yml

@@ -38,24 +38,9 @@ jobs:
     - name: Generate unit tests mocks
       run: tool/ci mocks-gen
 
-    # Analyze step needs different config for pull_request and push, so it is
-    # duplicated with if conditions to use the correct configuration for each
-    - name: Analyze (push)
-      if: github.event_name == 'push' && matrix.test_type == 'static'
-      uses: kitek/dartanalyzer-annotations-action@v1
-      env:
-        GITHUB_TOKEN: ${{ github.token }}
-      with:
-        check_name: test
-        commit_sha: ${{ github.sha }}
-    - name: Analyze (pull_request)
-      if: github.event_name == 'pull_request' && matrix.test_type == 'static'
-      uses: kitek/dartanalyzer-annotations-action@v1
-      env:
-        GITHUB_TOKEN: ${{ github.token }}
-      with:
-        check_name: test
-        commit_sha: ${{ github.event.pull_request.head.sha }}
+    - name: Analyze
+      if: matrix.test_type == 'static'
+      run: tool/ci analyze
 
     - name: Check format
       run: flutter format -n --set-exit-if-changed lib test example