chore: update all GitHub Actions to their latest versions

.github/workflows/prober-wikitree.yml

@@ -31,10 +31,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Use Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 24.x
           cache: 'npm'
@@ -51,7 +51,7 @@ jobs:
 
       - name: Cache Playwright Browsers
         id: cache-playwright
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.cache/ms-playwright
           key: playwright-${{ runner.os }}-${{ steps.playwright-version.outputs.version }}
@@ -70,7 +70,7 @@ jobs:
 
       - name: Upload Playwright report
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: prober-report-wikitree
           path: playwright-report/