October 12th security release pre release announcements (#4149)

* Pre-release announcement for the October security release

* Updated time

* Update locale/en/blog/vulnerability/oct-2021-security-releases.md

Co-authored-by: Michael Dawson <mdawson@devrus.com>

* security banner

* Fix

Co-authored-by: Michael Dawson <mdawson@devrus.com>

locale/en/blog/vulnerability/oct-2021-security-releases.md

@@ -0,0 +1,34 @@
+---
+date: 2021-10-05T16:00:00.000Z
+category: vulnerability
+title: October 12th 2021 Security Releases
+slug: oct-2021-security-releases
+layout: blog-post.hbs
+author: Matteo Collina
+---
+
+# Summary
+
+The Node.js project will release new versions of the 12.x, 14.x, and 16.x releases lines on or shortly after Tuesday
+
+October 12th, 2021 in order to address:
+
+* Two medium severity issues
+
+## Impact
+
+The 16.x release line of Node.js is vulnerable to two medium severity issues.
+
+The 14.x release line of Node.js is vulnerable to two medium severity issues.
+
+The 12.x release line of Node.js is vulnerable to two medium severity issues.
+
+## Release timing
+
+Releases will be available at, or shortly after, Tuesday, October 12th, 2021.
+
+## Contact and future updates
+
+The current Node.js security policy can be found at https://nodejs.org/en/security/. Please follow the process outlined in https://github.com/nodejs/node/blob/master/SECURITY.md if you wish to report a vulnerability in Node.js.
+
+Subscribe to the low-volume announcement-only nodejs-sec mailing list at https://groups.google.com/forum/#!forum/nodejs-sec to stay up to date on security vulnerabilities and security-related releases of Node.js and the projects maintained in the nodejs GitHub organization.

locale/en/site.json

@@ -162,10 +162,10 @@
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-      "endDate": "2021-09-08T16:00:00.000Z",
-      "text": "New security releases now available for 14.x, and 12.x release lines",
-      "link": "blog/vulnerability/aug-2021-security-releases2/"
+      "startDate": "2021-10-05T16:00:00.000Z",
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