ci(renovate): use base renovate config

This PR trims and aligns the renovate config
to use the base organisation config.
It eases the maintenance of administration,
but still, it also makes sense when juggling many repositories.

100% compatible, i.e no functionality loss to current conf.

Signed-off-by: Josef Andersson <josef.andersson@digg.se>

Author: janderssonse

renovate.json

@@ -1,29 +1,13 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "osvVulnerabilityAlerts": true,
-  "dependencyDashboardOSVVulnerabilitySummary": "all",
   "extends": [
-    "config:best-practices",
-    "workarounds:all",
-    "security:openssf-scorecard",
-    ":configMigration",
-    ":dependencyDashboard",
-    ":gitSignOff",
-    ":maintainLockFilesWeekly",
-    ":automergePatch",
-    ":semanticCommits",
-    "security:minimumReleaseAgeNpm",
-    ":rebaseStalePrs",
-    ":semanticCommitTypeAll(chore)",
-    "mergeConfidence:all-badges"
+    "local>diggsweden/.github:renovate-base",
+    ":maintainLockFilesWeekly"
+  ],
+  "enabledManagers": [
+    "github-actions",
+    "npm"
   ],
-  "commitMessageLowerCase": "auto",
-  "minimumReleaseAge": "7 days",
-  "labels": ["dependencies"],
-  "vulnerabilityAlerts": {
-    "labels": ["security", "dependencies"]
-  },
-  "timezone": "Europe/Stockholm",
   "platformAutomerge": false,
   "automergeSchedule": ["0 9-21 * * 6"],
   "packageRules": [
@@ -32,17 +16,6 @@
       "matchUpdateTypes": ["patch"],
       "automerge": true
     },
-    {
-      "matchManagers": ["github-actions"],
-      "addLabels": ["actions"],
-      "pinDigests": true,
-      "groupName": "github actions"
-    },
-    {
-      "matchManagers": ["github-actions"],
-      "matchPackageNames": ["slsa-framework/slsa-github-generator"],
-      "pinDigests": false
-    },
     {
       "description": "Node.js dependencies - Major updates",
       "matchManagers": ["npm"],