use lockfile to install cargo-public-api-crates

Author: ducaale

.github/workflows/CI.yml

@@ -104,7 +104,7 @@ jobs:
     - uses: Swatinem/rust-cache@v2
     - name: Install cargo-public-api-crates
       run: |
-        cargo install --git https://github.com/davidpdrsn/cargo-public-api-crates
+        cargo install --locked --git https://github.com/davidpdrsn/cargo-public-api-crates
     - name: Build rustdoc
       run: |
         cargo rustdoc --all-features --manifest-path tower-http/Cargo.toml -- -Z unstable-options --output-format json