Update release cadence to eight weeks

Per the recommendation vote of the TSC and after getting feedback on [this
issue][1], we are increasing the release cadence to every eight weeks.

[1]: opensearch-project/.github#234

Signed-off-by: Andrew Ross <[email protected]>

releases.md

@@ -47,7 +47,7 @@ Note:  We have not added a major release to the 2024 schedule yet.  If/when we a
 
 OpenSearch [follows semver](https://opensearch.org/blog/technical-post/2021/08/what-is-semver/), which means we will only release breaking changes in major versions.  All minor versions are compatible with every other minor version for that major.  For example, 1.2.0 will work with 1.3.2, 1.4.1, etc, but may not work with 2.0.
 
-For minor version releases, OpenSearch follows "release window" model as described in our [releasing documentation](https://github.com/opensearch-project/.github/blob/main/RELEASING.md).  The goal is to release a new minor version approximately every six weeks which includes all the new features and fixes that are ready to go. Once we enter a release window, every day we will generate a release candidate. When the exit criteria are met by a release candidate, we will make an announcement, update the release date column above and publish new artifacts on that date.
+For minor version releases, OpenSearch follows "release window" model as described in our [releasing documentation](https://github.com/opensearch-project/.github/blob/main/RELEASING.md). The goal is to release a new minor version approximately every eight weeks which includes all the new features and fixes that are ready to go. Once we enter a release window, every day we will generate a release candidate. When the exit criteria are met by a release candidate, we will make an announcement, update the release date column above and publish new artifacts on that date.
 
 **Note:** If we cannot pass the exit criteria by 2 weeks after the start of the release cycle window (1 week for 1.x patch releases), we will cancel the minor release and hold changes until the next release window.