chore: use default stale timings (60 days stale, 7 days close)

Signed-off-by: Miguel Martinez <miguel@chainloop.dev>

Author: migmartri

.github/workflows/stale.yml

@@ -14,21 +14,17 @@ jobs:
     steps:
       - uses: actions/stale@3a9db7e6a41a89f618792c92c0e97cc736e1b13f # v10.0.0
         with:
-          days-before-stale: 90
-          days-before-close: 14
-          stale-issue-label: stale
-          stale-pr-label: stale
           stale-issue-message: >
-            This issue is stale because it has been open for 90 days with no activity.
-            It will be closed in 14 days if no further activity occurs.
+            This issue is stale because it has been open for 60 days with no activity.
+            It will be closed in 7 days if no further activity occurs.
           close-issue-message: >
-            This issue was closed because it has been inactive for 14 days since being marked as stale.
+            This issue was closed because it has been inactive for 7 days since being marked as stale.
             Feel free to reopen if it is still relevant.
           stale-pr-message: >
-            This pull request is stale because it has been open for 90 days with no activity.
-            It will be closed in 14 days if no further activity occurs.
+            This pull request is stale because it has been open for 60 days with no activity.
+            It will be closed in 7 days if no further activity occurs.
           close-pr-message: >
-            This pull request was closed because it has been inactive for 14 days since being marked as stale.
+            This pull request was closed because it has been inactive for 7 days since being marked as stale.
             Feel free to reopen if it is still relevant.
           exempt-issue-labels: pinned,security
           exempt-pr-labels: pinned,security