chore(deps): bump actions/cache from 4 to 6

Bumps [actions/cache](https://github.com/actions/cache) from 4 to 6.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v6)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/build-wheels-cuda.yaml

@@ -70,7 +70,7 @@ jobs:
       - name: VS Integration Cache
         id: vs-integration-cache
         if: runner.os == 'Windows'
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ./MSBuildExtensions
           key: cuda-${{ matrix.cuda }}-vs-integration

.github/workflows/test.yaml

@@ -24,7 +24,7 @@ jobs:
       - name: Download model
         run: huggingface-cli download ${{ env.REPO_ID }} ${{ env.MODEL_FILE }}
       - name: Cache model
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.cache/huggingface/hub
           key: ${{ runner.os }}-model-${{ env.REPO_ID }}-${{ env.MODEL_FILE }}
@@ -46,7 +46,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
           cache: 'pip'
       - name: Restore model cache
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.cache/huggingface/hub
           key: ${{ runner.os }}-model-${{ env.REPO_ID }}-${{ env.MODEL_FILE }}
@@ -78,7 +78,7 @@ jobs:
           cache: 'pip'
 
       - name: Restore model cache
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.cache/huggingface/hub
           key: ${{ runner.os }}-model-${{ env.REPO_ID }}-${{ env.MODEL_FILE }}
@@ -118,7 +118,7 @@ jobs:
           python3 -c "import platform; print(platform.machine(), platform.architecture())"
 
       - name: Restore model cache
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.cache/huggingface/hub
           key: ${{ runner.os }}-model-${{ env.REPO_ID }}-${{ env.MODEL_FILE }}
@@ -155,7 +155,7 @@ jobs:
           python3 -c "import platform; print(platform.machine(), platform.architecture())"
 
       - name: Restore model cache
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.cache/huggingface/hub
           key: ${{ runner.os }}-model-${{ env.REPO_ID }}-${{ env.MODEL_FILE }}