ci: update python checkout in github actions

Author: timcera

.github/workflows/pypi-package.yml

@@ -28,7 +28,7 @@ jobs:
 
         steps:
             - name: Checkout source
-              uses: actions/checkout@v6
+              uses: actions/checkout@v7
               with:
                   submodules: recursive
 

.github/workflows/tests.yml

@@ -43,7 +43,7 @@ jobs:
 
         steps:
             - name: Checkout repository
-              uses: actions/checkout@v6
+              uses: actions/checkout@v7
               with:
                   submodules: recursive