CI: Update runs-on and checkout

Author: andy5995

.github/workflows/release_pyromod.yml

@@ -7,9 +7,9 @@ on:
 
 jobs:
   release:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
     - name: Build pyromod
       run: |
         MOD_VERSION="$(jq .version mod.json | tr -d \")"