Unlock version of tarpaulin used

Author: Nemo157

Diff for: .github/workflows/coverage.yml

@@ -14,7 +14,6 @@ jobs:
         toolchain: stable
     - uses: actions-rs/[email protected]
       with:
-        version: 0.13.3  # v0.14.0 has issues with time v0.2.16
         args:
           --locked
           --all-features