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](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/on-commit-main.yml

@@ -136,7 +136,7 @@ jobs:
         working-directory: example
         run: flutter build apk
       - name: Upload apk as artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: flutter_map_plugins_example_apk
           path: example/build/app/outputs/flutter-apk/app-release.apk
@@ -160,7 +160,7 @@ jobs:
   #      - name: Build iOS package
   #        run: flutter build ios --simulator
   #      - name: Upload Runner.app as artifact
-  #        uses: actions/upload-artifact@v5
+  #        uses: actions/upload-artifact@v6
   #        with:
   #          name: flutter_map_plugins_example.app
   #          path: example/build/ios/iphonesimulator
@@ -181,7 +181,7 @@ jobs:
       - name: Build Web
         run: flutter build web
       - name: Upload web as artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: flutter_map_plugins_example_web
           path: example/build/web

.github/workflows/on-pull-request.yml

@@ -142,7 +142,7 @@ jobs:
         working-directory: example
         run: flutter build apk
       - name: Upload apk as artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: flutter_map_plugins_example_apk
           path: example/build/app/outputs/flutter-apk/app-release.apk
@@ -165,7 +165,7 @@ jobs:
   #      - name: Build iOS package
   #        run: flutter build ios --simulator
   #      - name: Upload Runner.app as artifact
-  #        uses: actions/upload-artifact@v5
+  #        uses: actions/upload-artifact@v6
   #        with:
   #          name: flutter_map_plugins_example.app
   #          path: example/build/ios/iphonesimulator
@@ -185,7 +185,7 @@ jobs:
       - name: Build Web
         run: flutter build web
       - name: Upload web as artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: flutter_map_plugins_example_web
           path: example/build/web