Use dependabot

Author: oschwald

.github/dependabot.yml

@@ -0,0 +1,8 @@
+version: 2
+updates:
+- package-ecosystem: gomod
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "13:00"
+  open-pull-requests-limit: 10

.github/workflows/codeql-analysis.yml

@@ -2,6 +2,8 @@ name: "Code scanning - action"
 
 on:
   push:
+    branches-ignore:
+      - 'dependabot/**'
   pull_request:
   schedule:
     - cron: '0 13 * * 4'