Revert "Dependabot: Configure "widen" versioning strategy"

This reverts commit a02dc13.

Author: amotl

.github/dependabot.yml

@@ -5,7 +5,6 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
-    versioning-strategy: "widen"
 
   - package-ecosystem: "github-actions"
     directory: "/"