Bump actions/upload-artifact from 4 to 5 (#596)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -61,7 +61,7 @@ jobs:
           mkdir output
           cp target/${{ matrix.target }}/release/gopher64 output/gopher64-${{ matrix.arch }}
       - name: Upload file
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: gopher64-${{ matrix.arch }}
           path: output/gopher64-${{ matrix.arch }}
@@ -104,7 +104,7 @@ jobs:
           cp target/${{ matrix.target }}/release/gopher64.exe output/gopher64-${{ matrix.arch }}.exe
       - name: Upload unsigned artifact
         id: upload-unsigned-artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: gopher64-${{ matrix.arch }}
           path: output/gopher64-${{ matrix.arch }}.exe
@@ -146,7 +146,7 @@ jobs:
         env:
           AR: ar
       - name: Upload file
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: gopher64-${{ matrix.arch }}
           path: output/gopher64-${{ matrix.arch }}