Upgrade GitHub Actions to use latest versions

Author: tinchodias

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.smalltalk }} on ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - name: Setup smalltalkCI
@@ -33,7 +33,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Upload logs
         if: ${{ failure() }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: Logs_${{ matrix.smalltalk }}_${{ matrix.os }}
           path: |