Bump actions/cache/restore from 5.0.5 to 6.1.0

Bumps [actions/cache/restore](https://github.com/actions/cache) from 5.0.5 to 6.1.0.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](27d5ce7f10...55cc834586)

---
updated-dependencies:
- dependency-name: actions/cache/restore
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
         run: npm ci
 
       - name: Restore cached PDF files
-        uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: test/pdfs/*.pdf
           key: cached-pdf-files-${{ hashFiles('test/pdfs/*.pdf') }}

.github/workflows/coverage_browser_tests.yml

@@ -68,7 +68,7 @@ jobs:
         run: npm ci
 
       - name: Restore cached PDF files
-        uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: test/pdfs/*.pdf
           key: cached-pdf-files-${{ hashFiles('test/pdfs/*.pdf') }}

.github/workflows/integration_tests.yml

@@ -62,7 +62,7 @@ jobs:
         run: npm ci
 
       - name: Restore cached PDF files
-        uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: test/pdfs/*.pdf
           key: cached-pdf-files-${{ hashFiles('test/pdfs/*.pdf') }}

.github/workflows/publish_coverage_index.yml

@@ -60,7 +60,7 @@ jobs:
         run: npm ci
 
       - name: Restore cached PDF files
-        uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: test/pdfs/*.pdf
           key: cached-pdf-files-${{ hashFiles('test/pdfs/*.pdf') }}

.github/workflows/unit_tests.yml

@@ -62,7 +62,7 @@ jobs:
         run: npm ci
 
       - name: Restore cached PDF files
-        uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: test/pdfs/*.pdf
           key: cached-pdf-files-${{ hashFiles('test/pdfs/*.pdf') }}