fix lint issues

Signed-off-by: Per Goncalves da Silva <pegoncal@redhat.com>

Makefile

@@ -108,9 +108,6 @@ verify: tidy fmt vet generate manifests #HELP Verify all generated code is up-to
 .PHONY: fmt
 fmt: #EXHELP Run go fmt against code.
 	go fmt ./...
-
-.PHONY: fix-fmt
-fix-fmt: $(GOLANGCI_LINT) #EXHELP Runs golangci-lint with --fix flag to fix linting issues.
 	$(GOLANGCI_LINT) run --fix $(GOLANGCI_LINT_ARGS)
 
 .PHONY: vet

internal/catalogmetadata/cache/cache.go

@@ -141,7 +141,7 @@ func (fsc *filesystemCache) FetchCatalogContents(ctx context.Context, catalog *c
 		if err := os.MkdirAll(filepath.Dir(metaPath), os.ModePerm); err != nil {
 			return fmt.Errorf("error creating directory for catalog metadata: %v", err)
 		}
-		if err := os.WriteFile(metaPath, meta.Blob, os.ModePerm); err != nil {
+		if err := os.WriteFile(metaPath, meta.Blob, 0600); err != nil {
 			return fmt.Errorf("error writing catalog metadata to file: %v", err)
 		}
 		return nil