chore(deps): bump actions/upload-artifact from 5 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v5...v6)

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

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

.github/workflows/build_linux.yml

@@ -38,7 +38,7 @@ jobs:
       run: mkdir ./linux/artifacts
     - name: Copy release artifact
       run: cp ./linux/ccextractor ./linux/artifacts/
-    - uses: actions/upload-artifact@v5
+    - uses: actions/upload-artifact@v6
       with:
         name: CCExtractor Linux build
         path: ./linux/artifacts

.github/workflows/build_mac.yml

@@ -38,7 +38,7 @@ jobs:
       run: mkdir ./mac/artifacts
     - name: Copy release artifact
       run: cp ./mac/ccextractor ./mac/artifacts/
-    - uses: actions/upload-artifact@v5
+    - uses: actions/upload-artifact@v6
       with:
         name: CCExtractor mac build
         path: ./mac/artifacts

.github/workflows/build_windows.yml

@@ -70,7 +70,7 @@ jobs:
       - name: Display version information
         run: ./ccextractorwinfull.exe --version
         working-directory: ./windows/x64/Release-Full
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: CCExtractor Windows Release build
           path: |
@@ -122,7 +122,7 @@ jobs:
         continue-on-error: true
         run: ./ccextractorwinfull.exe --version
         working-directory: ./windows/x64/Debug-Full
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: CCExtractor Windows Debug build
           path: |