chore(deps): update actions/setup-python action to v5

Author: renovate[bot]

.github/workflows/submodule.yml

@@ -30,7 +30,7 @@ jobs:
           submodules: recursive # Fetch Hugo themes (true OR recursive)
           fetch-depth: 0 # Fetch all history for .GitInfo and .Lastmod
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: 3.8
 
@@ -61,7 +61,7 @@ jobs:
           submodules: recursive # Fetch Hugo themes (true OR recursive)
           fetch-depth: 0 # Fetch all history for .GitInfo and .Lastmod
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: 3.8