Update docker.io/postgres Docker tag to v18

.gitea/workflows/lint-test-docker.yaml

@@ -78,7 +78,7 @@ jobs:
             echo "$GIT_DIFF"
 
             for path in $GIT_DIFF; do
-              if echo "$path" | grep -q -E "hosts/[^/]+/[^/]+"; then
+              if [[ echo "$path" | grep -q -E "hosts/[^/]+/[^/]+" ]]; then
                 echo ""
                 echo ">> Adding path: $path"
                 CHANGED_COMPOSE+=$(echo "$path")

.gitea/workflows/lint-test-helm.yaml

@@ -80,7 +80,7 @@ jobs:
             echo "$GIT_DIFF"
 
             for path in $GIT_DIFF; do
-              if echo "$path" | grep -q -E "clusters/[^/]+/helm/[^/]+"; then
+              if [ echo "$path" | grep -q -E "clusters/[^/]+/helm/[^/]+" ]; then
                 echo ""
                 echo ">> Adding path: $path"
                 CHANGED_CHARTS+=$(echo "$path" | awk -F '/' '{print $4}')