ci.yml: don't sed Cargo.toml

Author: oech3

.github/workflows/ci.yml

@@ -99,11 +99,8 @@ jobs:
       id: build_grcov
       shell: bash
       run: |
-        git clone https://github.com/mozilla/grcov.git ~/grcov/
+        git clone --depth=1 https://github.com/mozilla/grcov.git ~/grcov/
         cd ~/grcov
-        # Hardcode the version of crossbeam-epoch. See
-        # https://github.com/uutils/coreutils/issues/3680
-        sed -i -e "s|tempfile =|crossbeam-epoch = \"=0.9.8\"\ntempfile =|" Cargo.toml
         cargo install --path .
         cd -
 # Uncomment when the upstream issue