Pin staticcheck to v0.3.3 (#1031)

The latest version of staticcheck (0.4.0 as of 3 Feb 2023) scans
dependencies (?) and incorrectly detects that the
proxy.WorkflowServiceProxyOptions.Client field is unused in api-go. We
will pin to the previous version for now but be advised this version is
known not to work with go1.20.

Makefile

@@ -76,7 +76,12 @@ vet: $(ALL_SRC)
 	done;
 
 staticcheck: $(ALL_SRC)
-	go install honnef.co/go/tools/cmd/staticcheck@latest
+	# The latest version of staticcheck (0.4.0 as of 3 Feb 2023) scans
+	# dependencies (?) and incorrectly detects that the
+	# proxy.WorkflowServiceProxyOptions.Client field is unused in api-go. We
+	# will pin to the previous version for now but be advised this version is
+	# known not to work with go1.20.
+	go install honnef.co/go/tools/cmd/[email protected]
 	@for dir in $(MOD_DIRS); do \
 		(cd "$$dir" && echo "In $$dir" && staticcheck ./...) || exit 1; \
 	done;