ci: temporarily downgrade ubuntu to 20.04 (#16320)

.github/workflows/cla.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   CLABot:
     if: github.event_name == 'pull_request_target' || contains(github.event.comment.html_url, '/pull/')
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     permissions:
       pull-requests: write
       contents: write

.github/workflows/codeql-analysis.yml

@@ -23,7 +23,7 @@ on:
 jobs:
   analyze:
     name: Analyze
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     permissions:
       actions: read
       contents: read

.github/workflows/crowdin_action.yml

@@ -13,7 +13,7 @@ on:
 
 jobs:
   synchronize-with-crowdin:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps: