chore: simpler dependabot (#108)

Ignores no longer needed after April 2022. Dependabot keeps the same style pinning now.

Author: henryiii

.github/dependabot.yml

@@ -5,12 +5,3 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
-    ignore:
-      # Official actions have moving tags like v1
-      # that are used, so they don't need updates here
-      - dependency-name: "actions/checkout"
-      - dependency-name: "actions/setup-python"
-      - dependency-name: "actions/cache"
-      - dependency-name: "actions/upload-artifact"
-      - dependency-name: "actions/download-artifact"
-      - dependency-name: "actions/labeler"