redirect reviewdog stderr to stdout

the lint Make target will output in stderr all the issues that
reviewdog discovered for the diff under investigation, however that
stderr is not captured by the Github action. we need to send the stderr
to stdout so that we can see it in the Github action logs when the lint
action fails.

Makefile

@@ -92,7 +92,8 @@ clean: clean-protos clean-migrations-compose
 .PHONY: lint install-lint-tools tests go-tests fmt fmt-proto fmt-go install-go-fmt-tools migration-tests
 
 lint:
-	@reviewdog -fail-on-error -diff="git diff origin/main" -filter-mode=added
+# we need to redirect stderr to stdout because Github actions don't capture the stderr lolz
+	@reviewdog -fail-on-error -diff="git diff origin/main" -filter-mode=added 2>&1
 
 install-lint-tools:
 	@go install honnef.co/go/tools/cmd/staticcheck@latest