chore(deps): update ghcr.io/cloudnative-pg/postgresql docker tag (#107)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yaml

@@ -18,17 +18,17 @@ jobs:
         include:
           - postgres_version: "17"
             # renovate datasource=docker depName=ghcr.io/cloudnative-pg/postgresql
-            cnpg_version: 17.5-5
+            cnpg_version: 17.5-6
             latest: "true"
           - postgres_version: "16"
             # renovate datasource=docker depName=ghcr.io/cloudnative-pg/postgresql
-            cnpg_version: 16.9-5
+            cnpg_version: 16.9-6
           - postgres_version: "15"
             # renovate datasource=docker depName=ghcr.io/cloudnative-pg/postgresql
-            cnpg_version: 15.13-5
+            cnpg_version: 15.13-6
           - postgres_version: "14"
             # renovate datasource=docker depName=ghcr.io/cloudnative-pg/postgresql
-            cnpg_version: 14.18-5
+            cnpg_version: 14.18-6
     steps:
       - name: Checkout
         uses: actions/checkout@v4