deps: avoid updates of indirect (transitive) deps

Problem:
Dependabot appears to be updating transitive deps.
Example: #4262

Solution:
Revert `dependency-name: '*'` since it's now clear that it wasn't
necessary to fix dependabot.

Author: justinmk3

.github/dependabot.yml

@@ -13,8 +13,6 @@ updates:
           prefix: 'deps'
       schedule:
           interval: 'daily'
-      allow:
-          - dependency-name: '*'
       groups:
           aws-sdk:
               patterns:
@@ -29,8 +27,6 @@ updates:
           prefix: 'deps'
       schedule:
           interval: 'daily'
-      allow:
-          - dependency-name: '*'
       groups:
           github-actions:
               patterns: