[deps]: Update actions/upload-artifact action to v7

Author: renovate[bot]

.github/workflows/a11y-eval-browser.yml

@@ -136,7 +136,7 @@ jobs:
         run: echo "$(<./test-summary/test-summary.md)" >> "$GITHUB_STEP_SUMMARY"
 
       - name: Upload results as artifact
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
         if: always()
         with:
           name: test-summary

.github/workflows/a11y-eval-web.yml

@@ -114,7 +114,7 @@ jobs:
         run: echo "$(<./test-summary/test-summary.md)" >> "$GITHUB_STEP_SUMMARY"
 
       - name: Upload results as artifact
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
         if: always()
         with:
           name: test-summary

.github/workflows/test-all-custom-flags.yml

@@ -188,7 +188,7 @@ jobs:
         run: echo "$(<./test-summary/test-summary.md)" >> "$GITHUB_STEP_SUMMARY"
 
       - name: Upload results as artifact
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
         if: always()
         with:
           name: test-summary

.github/workflows/test-all.yml

@@ -189,7 +189,7 @@ jobs:
         run: echo "$(<./test-summary/test-summary.md)" >> "$GITHUB_STEP_SUMMARY"
 
       - name: Upload results as artifact
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
         if: always()
         with:
           name: test-summary