fix: clean target directory in ci release workflow

Author: suchapalaver

.github/workflows/release_please.yml

@@ -54,6 +54,8 @@ jobs:
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: Install cargo-workspaces
         run: cargo install cargo-workspaces
+      - name: Clean target directory
+        run: rm -rf target
       - name: Publish workspace crates
         # `--no-remove-dev-deps` is a workaround for https://github.com/pksunkara/cargo-workspaces/issues/103
         run: cargo workspaces publish --from-git --no-remove-dev-deps -y