Upgrade to Poetry 2, limit max Kubernetes version, update dependencies

This switches the project to use PEP 440 compatible metadata instead of the
Poetry specific configuration.

As part of this the version of the Kubernetes library was limited to 31.* since
the most recent 32.0.0 release seems to break authentication:

- kubernetes-client/python#2333
- kubernetes-client/python#2334

.github/workflows/pre-commit.yml

@@ -12,6 +12,9 @@ jobs:
     runs-on: ubuntu-24.04
     timeout-minutes: 5
 
+    permissions:
+      contents: read
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.pre-commit-config.yaml

@@ -1,7 +1,7 @@
 ---
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.9.0
+    rev: v0.9.3
     hooks:
       - id: ruff
         args:
@@ -10,6 +10,6 @@ repos:
       - id: ruff-format
 
   - repo: https://github.com/woodruffw/zizmor-pre-commit
-    rev: v1.0.1
+    rev: v1.2.2
     hooks:
       - id: zizmor