re-enable dependabot with 2-day cooldown

Rename .disabled configs back and add cooldown: default-days: 2

Signed-off-by: Moe Zein <moe.zein@datadoghq.com>

Author: moezein0

.github/dependabot.yml.disabled .github/dependabot.yml.github/dependabot.yml.disabled renamed to .github/dependabot.yml

@@ -13,3 +13,5 @@ updates:
       gh-actions-packages:
         patterns:
           - "*"
+    cooldown:
+      default-days: 2