chore: migrate to artifactapi helm virtual repo

- replace all helm repos with artifactapi/virtual/helm
- update projects with accepted repos

.woodpecker/kubeconform.yaml

@@ -6,13 +6,3 @@ steps:
     image: git.unkin.net/unkin/almalinux9-kubetest:20260319
     commands:
       - make kubeconform
-    backend_options:
-      kubernetes:
-        serviceAccountName: default
-        resources:
-          requests:
-            memory: 512Mi
-            cpu: 1
-          limits:
-            memory: 2Gi
-            cpu: 2

.woodpecker/pre-commit.yaml

@@ -6,13 +6,3 @@ steps:
     image: git.unkin.net/unkin/almalinux9-base:20260308
     commands:
       - uvx pre-commit run --all-files
-    backend_options:
-      kubernetes:
-        serviceAccountName: default
-        resources:
-          requests:
-            memory: 256Mi
-            cpu: 250m
-          limits:
-            memory: 1Gi
-            cpu: 1