Bump actions/upload-artifact from 3 to 4 (#58)

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

Author: dependabot[bot]

.github/workflows/rust.yml

@@ -114,7 +114,7 @@ jobs:
           RUST_BACKTRACE: 1
           RUST_LOG: info
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: tarpaulin-report
           path: |
@@ -137,7 +137,7 @@ jobs:
       - run: cargo doc --workspace --all-features
 
       - run: tar cfJ rustdoc.tar.xz target/doc/
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: rustdoc
           path: rustdoc.tar.xz