.github/workflows/ci-linux.yml: Reduce 'standard', 'minimal-pre' to 25 parallel jobs

Author: Matthias Koeppe

.github/workflows/ci-linux.yml

@@ -104,6 +104,8 @@ jobs:
       tox_packages_factors: >-
           ["standard"]
       docker_push_repository: ghcr.io/${{ github.repository }}/
+      # Reduce from 30 to 25 because it runs in parallel with 'standard-sitepackages' below
+      max_parallel: 25
 
   standard-sitepackages:
     if: ${{ success() || failure() }}
@@ -167,6 +169,8 @@ jobs:
       tox_packages_factors: >-
           ["minimal"]
       docker_push_repository: ghcr.io/${{ github.repository }}/
+      # Reduce from 30 to 25 because it may run in parallel with 'standard-sitepackages' above
+      max_parallel: 25
 
   minimal:
     if: ${{ success() || failure() }}