Update postgres Docker tag to v18

.github/workflows/python-app.yml

@@ -12,7 +12,7 @@ jobs:
 
     services:
       database:
-        image: postgres:17-alpine
+        image: postgres:18-alpine
         env:
           # password for postgres user in the Docker container
           POSTGRES_PASSWORD: postgres

pyproject.toml

@@ -27,7 +27,7 @@ falcon-swagger-ui = { git = "https://github.com/alanorth/falcon-swagger-ui", rev
 
 # See: https://docs.astral.sh/uv/concepts/build-backend/#using-the-uv-build-backend
 [build-system]
-requires = ["uv_build>=0.9.0,<0.10.0"]
+requires = ["uv_build>=0.8.17,<0.9.0"]
 build-backend = "uv_build"
 
 [dependency-groups]