Add more dependabot targets

Signed-off-by: Pete Wall <pete.wall@grafana.com>

Author: petewall

.github/dependabot.yml

@@ -9,10 +9,35 @@ updates:
       - dependencies
       - docker
 
+  - package-ecosystem: docker
+    directory: /tools/doc-generator
+    schedule:
+      interval: daily
+    labels:
+      - dependencies
+      - docker
+
   - package-ecosystem: docker
     directory: /tools/schema-generator
     schedule:
       interval: daily
     labels:
       - dependencies
       - docker
+
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: daily
+    labels:
+      - dependencies
+      - github-actions
+
+  - package-ecosystem: npm
+    directory: /
+    schedule:
+      interval: daily
+    versioning-strategy: increase
+    labels:
+      - dependencies
+      - npm