(DOCSP-35773) Adds missing dates for OM releases (#86)

[JIRA](https://jira.mongodb.org/browse/DOCSP-35773)

[STAGING](https://preview-mongodbsarahsimpers.gatsbyjs.io/ops-manager/DOCSP-35773/release-notes/application/)

[BUILD](https://workerpool-boxgs.mongodbstitch.com/pages/job.html?collName=queue&jobId=65c61e6a6b2f17c95a7e7da9)

Confirmed dates based on the MongoDB Agent page and the dates of
creation for these tickets:

- https://jira.mongodb.org/browse/DOCSP-35343
- https://jira.mongodb.org/browse/DOCSP-36184

Author: sarahsimpers

source/release-notes/changelogs/ops-manager/changelog-onprem-v7.0.rst

@@ -3,6 +3,8 @@
 |onprem| Server 7.0.2
 ~~~~~~~~~~~~~~~~~~~~~
 
+*Released 2024-02-01*
+
 - Updates the {+mdbagent+} to :ref:`107.0.2.8531
   <mongodb-107.0.2.8531>`.
 - Updates :abbr:`JDK (Java Development Kit)` to ``jdk-17.0.10+7``. 
@@ -30,6 +32,8 @@
 |onprem| Server 7.0.1
 ~~~~~~~~~~~~~~~~~~~~~
 
+*Released 2024-01-08*
+
 .. important:: 
 
    .. include:: /includes/om-7.0.1-upgrade.rst