Bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build.yml

@@ -32,7 +32,7 @@ jobs:
     - name: Package
       run: make version=${{ github.ref_name }} luxtorpeda.tar.xz GODOT=godot
     - name: Upload Artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: luxtorpeda.tar.xz
         path: ./luxtorpeda.tar.xz

.github/workflows/test.yml

@@ -31,7 +31,7 @@ jobs:
         HEAD_REF: ${{ github.head_ref }}
       run: make version="$HEAD_REF"."$SHA_VALUE" luxtorpeda.tar.xz GODOT=godot
     - name: Upload Artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: luxtorpeda.tar.xz
         path: ./luxtorpeda.tar.xz