Update dependabot config and improve test workflow

Author: pcallewaert

.github/dependabot.yml

@@ -1,31 +1,26 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
 version: 2
 updates:
   - package-ecosystem: "github-actions"
     target-branch: "master"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
     open-pull-requests-limit: 10
     labels:
       - dependencies
   - package-ecosystem: "docker"
     target-branch: "master"
-    directory: "/build"
+    directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
     open-pull-requests-limit: 10
     labels:
       - dependencies
   - package-ecosystem: "gomod"
     target-branch: "master"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
     open-pull-requests-limit: 10
     labels:
       - dependencies

.github/workflows/test.yml

@@ -1,6 +1,12 @@
 name: Tests
 
-on: [push, pull_request]
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
 
 jobs:
   test: