Fix CI/CD some more

Author: siimav

.github/workflows/build.yml

@@ -26,7 +26,7 @@ jobs:
         env:
             KSP_ZIP_PASSWORD: ${{ secrets.KSP_ZIP_PASSWORD }}
   validate-cfg-files:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
@@ -36,7 +36,7 @@ jobs:
         uses: KSP-CKAN/KSPMMCfgParser@master
   build:
     # The type of runner that the job will run on
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs: [check-secret]
     if: needs.check-secret.outputs.has-password == 'true'
     # Steps represent a sequence of tasks that will be executed as part of the job