Update dependabot.yml

Author: blankdots

.github/dependabot.yml

@@ -7,6 +7,7 @@ updates:
       day: "monday"
     labels:
       - "pip dependencies"
+    target-branch: "devel"
     open-pull-requests-limit: 10
   - package-ecosystem: "github-actions"
     directory: "/"
@@ -15,6 +16,7 @@ updates:
       day: "monday"
     labels:
       - "github actions"
+    target-branch: "devel"
     open-pull-requests-limit: 10
   - package-ecosystem: docker
     directory: "/"
@@ -23,4 +25,5 @@ updates:
       day: "monday"
     labels:
       - "docker dependencies"
+    target-branch: "devel"
     open-pull-requests-limit: 10