only running test coverage for irc-rust package

Author: moblaa

.github/workflows/rust.yml

@@ -150,7 +150,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: test
-          args: --all
+          args: --package irc-rust
         env:
           CARGO_INCREMENTAL: 0
           # '-Cpanic=abort -Zpanic_abort_tests' fails if benchmarks are part of tests