[ci] upgrade to Ubuntu 22.04 (#11912)

[ci] PPAs aren't needed anymore.

[ci] invalidate linux opam cache

.github/workflows/main.yml

@@ -105,7 +105,7 @@ jobs:
 
 
   linux-build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       PLATFORM: linux64
       OPAMYES: 1
@@ -123,7 +123,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ~/.opam/
-          key: ${{ runner.os }}-${{ matrix.ocaml }}-${{ hashFiles('./haxe.opam', './libs/') }}
+          key: ${{ runner.os }}-${{ matrix.ocaml }}-${{ hashFiles('./haxe.opam', './libs/') }}-1
 
       - name: Install Neko from S3
         run: |
@@ -213,7 +213,7 @@ jobs:
 
   linux-test:
     needs: linux-build
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       PLATFORM: linux64
       TEST: ${{matrix.target}}
@@ -300,7 +300,7 @@ jobs:
 
   test-docgen:
     needs: linux-build
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       PLATFORM: linux64
       HXCPP_COMPILE_CACHE: ~/hxcache
@@ -854,7 +854,7 @@ jobs:
   deploy:
     if: success() && github.repository_owner == 'HaxeFoundation' && github.event_name != 'pull_request'
     needs: [linux-test, linux-arm64-test, mac-test, windows64-test]
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       # this is only needed for to get `COMMIT_DATE`...
       # maybe https://github.community/t/expose-commit-timestamp-in-the-github-context-data/16460/3
@@ -924,7 +924,7 @@ jobs:
   deploy_apidoc:
     if: success() && github.repository_owner == 'HaxeFoundation' && github.event_name != 'pull_request'
     needs: [linux-test, linux-arm64-test, mac-test, windows64-test]
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Install dependencies
         run: |

extra/github-actions/workflows/main.yml

@@ -24,7 +24,7 @@ jobs:
       @import build-windows.yml
 
   linux-build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       PLATFORM: linux64
       OPAMYES: 1
@@ -42,7 +42,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ~/.opam/
-          key: ${{ runner.os }}-${{ matrix.ocaml }}-${{ hashFiles('./haxe.opam', './libs/') }}
+          key: ${{ runner.os }}-${{ matrix.ocaml }}-${{ hashFiles('./haxe.opam', './libs/') }}-1
 
       @import install-neko-unix.yml
 
@@ -114,7 +114,7 @@ jobs:
 
   linux-test:
     needs: linux-build
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       PLATFORM: linux64
       TEST: ${{matrix.target}}
@@ -183,7 +183,7 @@ jobs:
 
   test-docgen:
     needs: linux-build
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       PLATFORM: linux64
       HXCPP_COMPILE_CACHE: ~/hxcache
@@ -478,7 +478,7 @@ jobs:
   deploy:
     if: success() && github.repository_owner == 'HaxeFoundation' && github.event_name != 'pull_request'
     needs: [linux-test, linux-arm64-test, mac-test, windows64-test]
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       # this is only needed for to get `COMMIT_DATE`...
       # maybe https://github.community/t/expose-commit-timestamp-in-the-github-context-data/16460/3
@@ -548,7 +548,7 @@ jobs:
   deploy_apidoc:
     if: success() && github.repository_owner == 'HaxeFoundation' && github.event_name != 'pull_request'
     needs: [linux-test, linux-arm64-test, mac-test, windows64-test]
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Install dependencies
         run: |