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] <support@github.com>

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
         run: |
           godotpcktool --help
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: godotpcktool-linux-x86_64-glibc2.31
           path: build/src/godotpcktool
@@ -55,7 +55,7 @@ jobs:
           cmake --build build
           sudo cmake --build build --target install
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: godotpcktool-windows-x86_64
           path: build/src/godotpcktool.exe