depricate ubuntu-20.04

.github/workflows/publish-immutable-action.yml

@@ -0,0 +1,20 @@
+name: 'Publish Immutable Action Version'
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+      packages: write
+
+    steps:
+      - name: Checking out
+        uses: actions/checkout@v4
+      - name: Publish
+        id: publish
+        uses: actions/publish-immutable-action@v0.0.4

.github/workflows/workflow.yml

@@ -190,9 +190,9 @@ jobs:
         run: __tests__/verify-dotnet.ps1 2.2 3.1
 
   test-proxy:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     container:
-      image: ubuntu:20.04
+      image: ubuntu:22.04
       options: --dns 127.0.0.1
     services:
       squid-proxy: