🌱 Build/test fixes: Install protoc and protoc-gen-go (#2038)

* Install protoc in validate-projects step

The `validate-projects` Makefile target depends on compilation of all go
binaries, including the protobuf generated go binaries

* Makefile: Cron build relies on `make install` for tools deps

* Add an explicit dependency to the build-proto steps
* Remove sleep

Author: raghavkaul

.github/workflows/main.yml

@@ -169,10 +169,6 @@ jobs:
        with:
          egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
 
-     - name: Sleep
-       run: sleep 10m  # This is workaround to avoid the action failures for installing the protoc
-       shell: bash
-
      - name: Install Protoc
        uses: arduino/setup-protoc@64c0c85d18e984422218383b81c52f8b077404d3 # v1.1.2
        with:
@@ -835,6 +831,10 @@ jobs:
        with:
          egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
 
+     - name: Install Protoc
+       uses: arduino/setup-protoc@64c0c85d18e984422218383b81c52f8b077404d3 # v1.1.2
+       with:
+        version: ${{ env.PROTOC_VERSION }}
      - name: Cache builds
        # https://github.com/mvdan/github-actions-golang#how-do-i-set-up-caching-between-builds
        uses: actions/cache@c3f1317a9e7b1ef106c153ac8c0f00fed3ddbc0d #v2.1.7

Makefile

@@ -104,9 +104,9 @@ build: $(build-targets)
 
 build-proto: ## Compiles and generates all required protobufs
 build-proto: cron/internal/data/request.pb.go cron/internal/data/metadata.pb.go
-cron/internal/data/request.pb.go: cron/internal/data/request.proto |  $(PROTOC)
+cron/internal/data/request.pb.go: cron/internal/data/request.proto |  $(PROTOC) install
 	protoc --go_out=../../../ cron/internal/data/request.proto
-cron/internal/data/metadata.pb.go: cron/internal/data/metadata.proto |  $(PROTOC)
+cron/internal/data/metadata.pb.go: cron/internal/data/metadata.proto |  $(PROTOC) install
 	protoc --go_out=../../../ cron/internal/data/metadata.proto
 
 generate-mocks: ## Compiles and generates all mocks using mockgen.