chore(deps): update postgres docker tag to v18

Author: renovate[bot]

.github/workflows/ci-backend.yml

@@ -48,7 +48,7 @@ jobs:
     runs-on: ubuntu-latest
     services:
       postgres:
-        image: postgres:16-alpine
+        image: postgres:18-alpine
         env:
           POSTGRES_DB: glean_test
           POSTGRES_USER: glean

docker-compose.dev.yml

@@ -8,7 +8,7 @@
 
 services:
   postgres:
-    image: postgres:16-alpine
+    image: postgres:18-alpine
     container_name: glean-dev-postgres
     restart: unless-stopped
     environment:

docker-compose.lite.yml

@@ -19,7 +19,7 @@
 
 services:
   postgres:
-    image: postgres:16-alpine
+    image: postgres:18-alpine
     container_name: glean-postgres
     environment:
       POSTGRES_DB: ${POSTGRES_DB:-glean}

docker-compose.test.yml

@@ -6,7 +6,7 @@
 
 services:
   postgres-test:
-    image: postgres:16-alpine
+    image: postgres:18-alpine
     container_name: glean-test-postgres
     environment:
       POSTGRES_DB: glean_test

docker-compose.yml

@@ -17,7 +17,7 @@
 
 services:
   postgres:
-    image: postgres:16-alpine
+    image: postgres:18-alpine
     container_name: glean-postgres
     environment:
       POSTGRES_DB: ${POSTGRES_DB:-glean}