Add release entry for 0.7.3

Author: SchrodingersGat

docs/releases/release_notes.md

@@ -24,10 +24,14 @@ The head of the *master* code branch represents the "latest and greatest" workin
 
 Specific tagged releases are shown below. Click on the release notes for each version to learn more.
 
+!!! info "Release Notes"
+    Starting from v0.7.2, release notes have been migrated to GitHub. Release notes for older versions are available at the links below.
+
 ### 0.7.x
 | <span class='fas fa-clipboard-list'></span> Release | <span class='fas fa-calendar-alt'></span> Date | <span class='fab fa-github'></span> GitHub | <span class='fab fa-docker'></span> Docker |
 | --- | --- | --- | --- |
-| 0.7.2 | 2022-06-15 | [0.7.2](https://github.com/inventree/InvenTree/releases/tag/0.7.2) | inventree:0.7.1 |
+| 0.7.3 | 2022-06-16 | [0.7.3](https://github.com/inventree/InvenTree/releases/tag/0.7.3) | inventree:0.7.3 |
+| 0.7.2 | 2022-06-15 | [0.7.2](https://github.com/inventree/InvenTree/releases/tag/0.7.2) | inventree:0.7.2 |
 | [0.7.1](./0.7.1.md) | 2022-06-02 | [0.7.1](https://github.com/inventree/InvenTree/releases/tag/0.7.1) | [inventree:0.7.1](https://hub.docker.com/layers/inventree/inventree/inventree/0.7.1/images/sha256-5da112efd1aa43d2e22df7053e6344e884d094aaddcf6401f0ccbaac245e61da?context=explore) |
 | [0.7.0](./0.7.0.md) | 2022-05-24 | [0.7.0](https://github.com/inventree/InvenTree/releases/tag/0.7.0) | [inventree:0.7.0](https://hub.docker.com/layers/inventree/inventree/inventree/0.7.0/images/sha256-b15d2970e1577cc8e2429487636f07576912cec8d3c7ee0227c3e51711f0042a?context=explore) |