build(deps): 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](https://github.com/actions/upload-artifact/compare/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

@@ -66,7 +66,7 @@ jobs:
       - uses: actions/checkout@v4
       - run: ./scripts/install-protobuf.sh
       - run: cargo build --all-features --timings
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: timings
           path: target/cargo-timings/cargo-timing.html

.github/workflows/cover.yml

@@ -42,7 +42,7 @@ jobs:
             --keep-only 'crates/*' \
             --output-path ./target/coverage/
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: coverage
           path: target/coverage/html/