Add RelNotes 2.43.0

docs/release-notes/2.43.0.md

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+# Percona Monitoring and Management 2.43.0
+
+| **Release date** | July , 2024                                                                                   |
+| ----------------- | ----------------------------------------------------------------------------------------------- |
+| **Installation** | [Installing Percona Monitoring and Management](../quickstart/index.md) |
+
+Percona Monitoring and Management (PMM) is an open source database monitoring, management, and observability solution for MySQL, PostgreSQL, and MongoDB.
+
+It enables you to observe the health of your database systems, explore new patterns in their behavior, troubleshoot them and execute database management operations regardless of whether your databases are located on-premises or in the cloud.
+
+## What's new in this release
+
+This release introduces this and that
+
+## Release highlights
+
+### Feature name
+
+![!image](../_images/.png)
+
+## Improvements
+
+- [PMM-xxxx](https://perconadev.atlassian.net/browse/PMM-xxxxx) - 
+- 
+### Fixed issues
+
+- [PMM-xxxxx](https://perconadev.atlassian.net/browse/PMM-xxxx) - Fixed an issue in the