ci: add protoc installation for proto compilation

Author: raffaelschneider

.github/workflows/release.yml

@@ -51,10 +51,19 @@ jobs:
         with:
           targets: ${{ matrix.target }}
 
+      - name: Install protoc (Linux)
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y protobuf-compiler
+
+      - name: Install protoc (macOS)
+        if: runner.os == 'macOS'
+        run: brew install protobuf
+
       - name: Install cross-compilation tools
         if: matrix.cross
         run: |
-          sudo apt-get update
           sudo apt-get install -y gcc-aarch64-linux-gnu
           echo "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc" >> $GITHUB_ENV