Update Dependabot to use pnpm

- Remove docker as its not needed now

.github/dependabot.yml

@@ -1,6 +1,6 @@
 version: 2
 updates:
-  - package-ecosystem: 'npm'
+  - package-ecosystem: 'pnpm'
     directory: '..'
     schedule:
       interval: 'daily'
@@ -26,16 +26,3 @@ updates:
     commit-message:
       prefix: 'dependa'
     open-pull-requests-limit: 20
-
-  - package-ecosystem: 'docker'
-    directory: '/'
-    schedule:
-      interval: 'weekly'
-      time: '04:30'
-    labels:
-      - 'docker'
-      - 'dependencies'
-      - 'dependabot'
-    commit-message:
-      prefix: 'dependa'
-    open-pull-requests-limit: 20