Remove unnecessary gomod and docker stuff from dependabot.yml (#36)

Author: samcunliffe

.github/dependabot.yml

@@ -1,24 +1,6 @@
 ---
 version: 2
-registries:
-  ghcr:
-    type: docker-registry
-    url: ghcr.io
-    username: PAT
-    password: '${{secrets.CONTAINER_BUILDER_TOKEN}}'
 updates:
-  - package-ecosystem: 'gomod'
-    directory: '/'
-    schedule:
-      interval: weekly
-    commit-message:
-      prefix: 'chore(deps)'
-    groups:
-      dependencies:
-        applies-to: version-updates
-        update-types:
-          - 'minor'
-          - 'patch'
   - package-ecosystem: 'npm'
     directory: '/'
     schedule:
@@ -31,20 +13,6 @@ updates:
         update-types:
           - 'minor'
           - 'patch'
-  - package-ecosystem: docker
-    registries:
-      - ghcr
-    directory: '/'
-    schedule:
-      interval: weekly
-    commit-message:
-      prefix: 'chore(deps)'
-    groups:
-      dependencies:
-        applies-to: version-updates
-        update-types:
-          - 'minor'
-          - 'patch'
   - package-ecosystem: github-actions
     directory: '/'
     schedule: