chore(deps): update ghcr.io/cloudnative-pg/postgresql docker tag (#54)

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

.github/workflows/build.yaml

@@ -18,17 +18,17 @@ jobs:
         include:
           - postgres_version: "17"
             # renovate datasource=docker depName=ghcr.io/cloudnative-pg/postgresql
-            cnpg_version: 17.2-7
+            cnpg_version: 17.2-8
             latest: "true"
           - postgres_version: "16"
             # renovate datasource=docker depName=ghcr.io/cloudnative-pg/postgresql
-            cnpg_version: 16.6-7
+            cnpg_version: 16.6-8
           - postgres_version: "15"
             # renovate datasource=docker depName=ghcr.io/cloudnative-pg/postgresql
-            cnpg_version: 15.10-7
+            cnpg_version: 15.10-8
           - postgres_version: "14"
             # renovate datasource=docker depName=ghcr.io/cloudnative-pg/postgresql
-            cnpg_version: 14.15-7
+            cnpg_version: 14.15-8
     steps:
       - name: Checkout
         uses: actions/checkout@v4