github: workflows: stop repo-lockdown workflow for new pr

Signed-off-by: Xiaoguang Xing <xiaoguang.xing@sophgo.com>

.github/workflows/repo-lockdown.yml

@@ -1,26 +1,26 @@
-name: 'Repo Lockdown'
-
-on:
-  pull_request_target:
-    types: opened
-
-permissions:
-  pull-requests: write
-
-jobs:
-  action:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: dessant/repo-lockdown@v4
-        with:
-          pr-comment: |
-            We have mailing list based patch review so it would be great if you can send these patchs to OpenSBI mailing list.
-
-            You need to join OpenSBI mailing list using following link
-            http://lists.infradead.org/mailman/listinfo/opensbi
-
-            Make sure you use "git send-email" to send the patches.
-
-            Thanks for your contribution to OpenSBI project.
-          lock-pr: true
-          close-pr: true
+#name: 'Repo Lockdown'
+#
+#on:
+#  pull_request_target:
+#    types: opened
+#
+#permissions:
+#  pull-requests: write
+#
+#jobs:
+#  action:
+#    runs-on: ubuntu-latest
+#    steps:
+#      - uses: dessant/repo-lockdown@v4
+#        with:
+#          pr-comment: |
+#            We have mailing list based patch review so it would be great if you can send these patchs to OpenSBI mailing list.
+#
+#            You need to join OpenSBI mailing list using following link
+#            http://lists.infradead.org/mailman/listinfo/opensbi
+#
+#            Make sure you use "git send-email" to send the patches.
+#
+#            Thanks for your contribution to OpenSBI project.
+#          lock-pr: true
+#          close-pr: true