Fix build script as it was not working on some platforms

.github/workflows/build_orca.yml

@@ -59,9 +59,10 @@ jobs:
 
       - name: Install codegen tools and generate config sources
         run: |
-          python3 -m venv /tmp/codegen_venv
-          /tmp/codegen_venv/bin/pip install grpcio-tools
-          /tmp/codegen_venv/bin/python tools/run_codegen.py
+          if [ "$(uname)" = "Linux" ]; then
+            pip3 install grpcio-tools
+          fi
+          python3 tools/run_codegen.py
         if: runner.os != 'Windows'
         shell: bash
 
@@ -113,7 +114,7 @@ jobs:
         if: runner.os == 'macOS' && !inputs.macos-combine-only
         run: |
           if [ -z "${{ vars.SELF_HOSTED }}" ]; then
-            brew install libtool
+            brew install libtool protobuf
             brew list
           fi
           mkdir -p ${{ github.workspace }}/deps/build/${{ inputs.arch }}