ci: fix remaining dockerhub-cache references in test/finalize

.woodpecker/finalize.yml

@@ -10,7 +10,7 @@ when:
 
 steps:
   integration-test:
-    image: registry.celestium.life/dockerhub-cache/alpine/k8s:1.30.2
+    image: alpine/k8s:1.30.2
     environment:
       DOCKERHUB_USER:
         from_secret: docker_username
@@ -29,7 +29,7 @@ steps:
             cpu: 1000m
 
   mirror-github:
-    image: registry.celestium.life/dockerhub-cache/alpine/git
+    image: alpine/git
     failure: ignore
     environment:
       GITHUB_SSH_KEY:

.woodpecker/test.yml

@@ -4,7 +4,7 @@ when:
   - pull_request
 steps:
   lint-python:
-    image: registry.celestium.life/dockerhub-cache/library/python:3.12-slim
+    image: python:3.12-slim
     commands:
     - pip install ruff==0.15.10 --quiet
     - ruff --version
@@ -20,7 +20,7 @@ steps:
             cpu: 1000m
     depends_on: []
   test-python:
-    image: registry.celestium.life/dockerhub-cache/library/python:3.12-slim
+    image: python:3.12-slim
     commands:
     - pip install -r requirements.txt --quiet
     - pip install hypothesis --quiet
@@ -36,7 +36,7 @@ steps:
             cpu: 2000m
     depends_on: []
   test-frontend:
-    image: registry.celestium.life/dockerhub-cache/library/node:24-slim
+    image: node:24-slim
     commands:
     - cd frontend
     - npm ci