feat(deps): update dependency httpx to v0.28.1

Author: renovate[bot]

requirements.txt

@@ -6,7 +6,7 @@ fastapi==0.115.5
 fastapi-pagination==0.12.31
 h11==0.14.0
 httpcore==1.0.6
-httpx==0.27.2
+httpx==0.28.1
 idna==3.10
 psycopg==3.2.4
 psycopg-binary==3.2.4