Update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/create.yml

@@ -34,7 +34,7 @@ jobs:
     steps:
 
       - name: Checkout pyjnius
-        uses: actions/checkout@v5
+        uses: actions/checkout@v7
 
       - name: Setup Python (Ubuntu x86_64, macOS Intel, Windows x86_64)
         uses: actions/setup-python@v6
@@ -79,7 +79,7 @@ jobs:
     runs-on: 'ubuntu-latest'
     steps:
       - name: Checkout pyjnius
-        uses: actions/checkout@v5
+        uses: actions/checkout@v7
 
       - name: Setup Python
         uses: actions/setup-python@v6
@@ -130,7 +130,7 @@ jobs:
     steps:
 
       - name: Checkout pyjnius
-        uses: actions/checkout@v5
+        uses: actions/checkout@v7
 
       - uses: actions/download-artifact@v4
         with: