Full bump: Python 3.14, Alpine 3.24, all deps and pre-commit hooks

- Runtime image python:3.12-alpine -> python:3.14-alpine3.24
- Builder uv image -> python3.14-alpine
- requires-python >=3.14, ruff target-version py314, .python-version 3.14
- Deps: aiofiles 25.1.0, environs 15.0.1, granian 2.7.9, orjson 3.11.9,
  uvloop 0.22.1 (uv.lock regenerated with --upgrade)
- pre-commit hooks: pre-commit-hooks v6.0.0, hadolint v2.14.0, ruff v0.15.20
- Verified: image builds on musl (cp314 wheels), granian 2.x starts,
  /metrics returns 200, pre-commit run --all-files passes

.pre-commit-config.yaml

@@ -1,11 +1,11 @@
 default_stages: [ pre-commit ]
 fail_fast: true
 default_language_version:
-  python: python3.12
+  python: python3.14
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: check-added-large-files
       - id: check-toml
@@ -16,12 +16,12 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/hadolint/hadolint
-    rev: v2.13.1-beta
+    rev: v2.14.0
     hooks:
       - id: hadolint
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.9.7
+    rev: v0.15.20
     hooks:
       - id: ruff
         args: [ --fix ]