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](actions/upload-artifact@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>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -97,26 +97,26 @@ jobs:
         echo "" >> $env:GITHUB_STEP_SUMMARY
 
     - name: Upload artifact (cmder.zip)
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         path: build/cmder.zip
         name: cmder.zip
         if-no-files-found: error
 
     - name: Upload artifact (cmder.7z)
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         path: build/cmder.7z
         name: cmder.7z
 
     - name: Upload artifact (cmder_mini.zip)
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         path: build/cmder_mini.zip
         name: cmder_mini.zip
 
     - name: Upload artifact (hashes.txt)
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         path: build/hashes.txt
         name: hashes.txt