partial revert #560

Author: kevinjqliu

.github/dependabot.yml

@@ -35,5 +35,3 @@ updates:
       - dependency-name: "cpp-linter/cpp-linter-action"
         versions: ">=2.16"
     open-pull-requests-limit: 50
-    cooldown:
-      default-days: 7

README.md

@@ -8,7 +8,6 @@ This repository hosts GitHub Actions developed by the ASF community and approved
   - [Adding a New Action](#adding-a-new-action-to-the-allow-list)
   - [Reviewing](#reviewing)
   - [Adding a New Version](#adding-a-new-version-to-the-allow-list)
-    - [Dependabot Cooldown Period](#dependabot-cooldown-period)
   - [Manual Version Addition](#manual-addition-of-specific-versions)
   - [Removing a Version](#removing-a-version-manually)
 
@@ -144,23 +143,6 @@ This will:
 > **Prerequisites:** `docker`, `uv`, and `gh` (GitHub CLI, authenticated via `gh auth login`).
 > The build runs in a `node:20-slim` container so no local Node.js installation is needed.
 
-#### Dependabot Cooldown Period
-
-This repository uses a [Dependabot cooldown period](https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#cooldown) of 7 days. After a Dependabot PR is merged or closed, Dependabot will wait 7 days before opening the next PR for the same ecosystem. This helps keep the volume of update PRs manageable and gives reviewers time to catch up.
-
-> [!TIP]
-> We recommend that ASF projects configure a similar cooldown in their own `dependabot.yml` to avoid being overwhelmed by update PRs and to catch up with approved actions here:
-> ```yaml
-> updates:
->   - package-ecosystem: "github-actions"
->     directory: "/"
->     schedule:
->       interval: "weekly"
->     cooldown:
->       default-days: 7
-> ```
-> Adjust the `default-days` value to match your project's review capacity.
-
 ### Manual Addition of Specific Versions
 
 If you need to add a specific version of an already approved action (especially an older one):