move some settings of renovate to configmap

apps/renovate/configmap.yaml

@@ -0,0 +1,11 @@
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  namespace: renovate
+  name: renovate-config
+data:
+  RENOVATE_AUTODISCOVER: "true"
+  RENOVATE_ENDPOINT: https://gitea.lumpiasty.xyz/api/v1
+  RENOVATE_PLATFORM: gitea
+  RENOVATE_GIT_AUTHOR: Renovate Bot <renovate@lumpiasty.xyz>

apps/renovate/cronjob.yaml

@@ -19,4 +19,6 @@ spec:
               envFrom:
                 - secretRef:
                     name: renovate-env
+                - configMapRef:
+                    name: renovate-config
           restartPolicy: Never

apps/renovate/kustomization.yaml

@@ -2,4 +2,5 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
   - namespace.yaml
+  - configmap.yaml
   - cronjob.yaml