Use ubuntu-22.04 and actions/checkout@v3

.github/workflows/pr.yml

@@ -4,17 +4,17 @@ on: [pull_request]
 
 jobs:
   clang-format:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: clang-format
       run: |
         docker run --rm -v ${PWD}:/src ghcr.io/wiiu-env/clang-format:13.0.0-2 -r ./source ./include
   build-lib:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     needs: clang-format
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: build lib
       run: |
         docker build . -f Dockerfile.buildlocal -t builder