ci(deps): bump actions/upload-artifact from 4 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...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

@@ -67,7 +67,7 @@ jobs:
         run: npm run build:windows
 
       - name: Upload Windows installer
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: windows-installer
           path: installers/windows/dist/*.msi
@@ -95,7 +95,7 @@ jobs:
         run: npm run build:macos
 
       - name: Upload macOS installer
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: macos-installer
           path: installers/macos/dist/*.pkg
@@ -134,14 +134,14 @@ jobs:
           bash build-rpm.sh
 
       - name: Upload Linux DEB package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: linux-deb-installer
           path: installers/linux/dist/*.deb
           retention-days: 30
 
       - name: Upload Linux RPM package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: linux-rpm-installer
           path: installers/linux/dist/*.rpm

.github/workflows/release.yml

@@ -254,7 +254,7 @@ jobs:
 
       # Upload artifacts
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: installer-${{ matrix.platform }}
           path: |

.github/workflows/test.yml

@@ -45,7 +45,7 @@ jobs:
 
       - name: Upload Windows test results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: windows-test-results
           path: coverage/
@@ -85,7 +85,7 @@ jobs:
 
       - name: Upload macOS test results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: macos-test-results
           path: coverage/
@@ -125,7 +125,7 @@ jobs:
 
       - name: Upload Linux test results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: linux-test-results
           path: coverage/
@@ -265,7 +265,7 @@ jobs:
 
       - name: Upload audit results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: security-audit
           path: audit-results.json