chore: add pre-commit dependabot config (#1236)

Author: MartinHjelmare

.github/dependabot.yml

@@ -4,6 +4,7 @@
 # https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 
 version: 2
+enable-beta-ecosystems: true # Required to use the pre-commit ecosystems
 updates:
   - package-ecosystem: "github-actions"
     directory: "/"
@@ -15,3 +16,7 @@ updates:
     schedule:
       interval: "weekly"
     open-pull-requests-limit: 10
+  - package-ecosystem: "pre-commit"
+    directory: "/"
+    schedule:
+      interval: "weekly"