Upgrade build image to ubuntu-22.04.

Author: telrikk

.github/workflows/godot-ci.yml

@@ -10,7 +10,7 @@ env:
 jobs:
   export-windows:
     name: Windows Export
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     container:
       image: barichello/godot-ci:4.3
     steps:
@@ -38,7 +38,7 @@ jobs:
 
   # export-linux:
   #   name: Linux Export
-  #   runs-on: ubuntu-20.04
+  #   runs-on: ubuntu-22.04
   #   container:
   #     image: barichello/godot-ci:4.3
   #   steps:
@@ -64,7 +64,7 @@ jobs:
 
   # export-mac:
   #   name: Mac Export
-  #   runs-on: ubuntu-20.04
+  #   runs-on: ubuntu-22.04
   #   container:
   #     image: barichello/godot-ci:4.3
   #   steps: