ci: Reduce large runner usage (#10873)

Author: Luca Forstner

.github/workflows/build.yml

@@ -620,7 +620,7 @@ jobs:
     name: Playwright (${{ matrix.bundle }}${{ matrix.shard && format(' {0}/{1}', matrix.shard, matrix.shards) || ''}}) Tests
     needs: [job_get_metadata, job_build]
     if: needs.job_get_metadata.outputs.changed_browser_integration == 'true' || github.event_name != 'pull_request'
-    runs-on: ubuntu-20.04-large-js
+    runs-on: ubuntu-20.04
     timeout-minutes: 25
     strategy:
       fail-fast: false
@@ -783,7 +783,7 @@ jobs:
     name: Browser (${{ matrix.browser }}) Tests
     needs: [job_get_metadata, job_build]
     if: needs.job_get_metadata.outputs.changed_browser == 'true' || github.event_name != 'pull_request'
-    runs-on: ubuntu-20.04-large-js
+    runs-on: ubuntu-20.04
     timeout-minutes: 20
     strategy:
       fail-fast: false

.github/workflows/flaky-test-detector.yml

@@ -23,7 +23,7 @@ concurrency:
 
 jobs:
   flaky-detector:
-    runs-on: ubuntu-20.04-large-js
+    runs-on: ubuntu-20.04
     timeout-minutes: 60
     name: 'Check tests for flakiness'
     # Also skip if PR is from master -> develop