chore: improve dependabot config

Signed-off-by: Emilien Escalle <emilien.escalle@escemi.com>

Author: neilime

.github/dependabot.yml

@@ -3,8 +3,6 @@ updates:
   - package-ecosystem: docker
     open-pull-requests-limit: 20
     directory: "/"
-    cooldown:
-      default-days: 7
     schedule:
       interval: weekly
       day: friday
@@ -19,8 +17,6 @@ updates:
     directories:
       - "/"
       - "/actions/**/*"
-    cooldown:
-      default-days: 7
     schedule:
       interval: weekly
       day: friday
@@ -33,8 +29,6 @@ updates:
   - package-ecosystem: npm
     open-pull-requests-limit: 20
     directory: "/actions/parse-ci-reports"
-    cooldown:
-      default-days: 7
     schedule:
       interval: weekly
       day: friday
@@ -47,8 +41,6 @@ updates:
   - package-ecosystem: "devcontainers"
     open-pull-requests-limit: 20
     directory: "/"
-    cooldown:
-      default-days: 7
     schedule:
       interval: weekly
       day: friday