Revert "remove vendor mode from linter"

This reverts commit ad97d83.

Author: credativ-marco

Makefile

@@ -24,7 +24,7 @@ ifeq ($(strip $(GOMOD)),) # Is empty?
 	GOLANGCI_ARG=
 else
 	MOD_FLAG=-mod=$(GOMOD)
-	GOLANGCI_ARG=
+	GOLANGCI_ARG=--modules-download-mode=$(GOMOD)
 endif
 
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