Use make lint in CI instead of golangci-lint action (#70)

Run `make lint` in CI instead of using the action to make sure CI is
consistent with running `make lint` locally.

.github/workflows/ci.yaml

@@ -34,11 +34,4 @@ jobs:
         # Often, lint guidelines depend on the Go version. To prevent
         # conflicting guidance, run only on the most recent supported version.
         if: matrix.go-version == 'stable'
-        uses: golangci/golangci-lint-action@v3
-        with:
-          skip-pkg-cache: true
-          only-new-issues: true
-          args: >
-            --modules-download-mode=readonly
-            --timeout=3m0s
-            ./... 
+        run: make lint

Makefile

@@ -38,7 +38,7 @@ lint: lint-proto lint-go  ## Lint code and protos
 
 .PHONY: lint-go
 lint-go: $(BIN)/golangci-lint
-	$(BIN)/golangci-lint run ./...
+	$(BIN)/golangci-lint run --modules-download-mode=readonly --timeout=3m0s ./...
 
 .PHONY: lint-proto
 lint-proto: $(BIN)/buf