chore: bump actions/upload-artifact from 6 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/main.yml

@@ -22,7 +22,7 @@ jobs:
           verbosity: Diagnostic
 
       - name: Upload MalumMenu.dll artifact
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: MalumMenu.dll
           path: /home/runner/work/MalumMenu/MalumMenu/src/bin/Release/net6.0/MalumMenu.dll
@@ -42,13 +42,13 @@ jobs:
           cp /home/runner/work/MalumMenu/MalumMenu/src/bin/Release/net6.0/MalumMenu.dll BepInEx_x64/BepInEx/plugins/
 
       - name: Upload MalumMenu_Steam_Itch.zip artifact
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: MalumMenu_Steam_Itch
           path: BepInEx_x86
 
       - name: Upload MalumMenu_EpicGames_MicrosoftStore_XboxApp.zip artifact
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: MalumMenu_EpicGames_MicrosoftStore_XboxApp
           path: BepInEx_x64