Update which requirement from 5.0 to 8.0

Updates the requirements on [which](https://github.com/harryfei/which-rs) to permit the latest version.
- [Release notes](https://github.com/harryfei/which-rs/releases)
- [Changelog](https://github.com/harryfei/which-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/harryfei/which-rs/compare/5.0.0...8.0.0)

---
updated-dependencies:
- dependency-name: which
  dependency-version: 8.0.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/coverage.yml

@@ -29,7 +29,7 @@ jobs:
         run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
 
       - name: Upload to codecov.io
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v3
         with:
           files: lcov.info
           fail_ci_if_error: false

Cargo.toml

@@ -25,7 +25,7 @@ crossterm = "0.27"
 tokio = { version = "1.35", features = ["time", "rt-multi-thread", "macros", "signal", "sync"] }
 
 # Process execution
-which = "5.0"
+which = "8.0"
 
 # Parsing
 nom = "7.1"