update CHANGES.rst

CHANGES.rst

@@ -29,7 +29,8 @@ Internal changes
 * Added a `pytest` marker (``pytest.mark.requires_internet``) to allow for skipping of tests that depend on remote network calls to function properly. (:pull:`1473`).
 * Added handling for `pytest-socket`'s ``SocketBlockedError`` in ``xclim.testing.open_dataset`` when attempting to fetch md5 validation files for cached testing data while explicitly disabling internet sockets. (:issue:`1468`, :pull:`1473`).
 * Updated the testing data used in the `analogs.ipynb` notebook to use the testing data now found in `Ouranosinc/xclim-testdata`'s main branch. (`xclim-testdata PR/26 <https://github.com/Ouranosinc/xclim-testdata/pull/26>`_, :pull:`1473`).
-* GitHub deployment workflows now use the "Trusted Publisher" feature to sign and publish the `xclim` wheel and source distributions.
+* GitHub deployment workflows now employs use of deployment environments for workflow security and uses the `Trusted Publisher <https://docs.pypi.org/trusted-publishers/using-a-publisher/>`_ feature to sign and publish the `xclim` wheel and source distributions. (:pull:`1469`).
+* Mastodon publishing now uses `chuhlomin/render-template <https://github.com/chuhlomin/render-template>`_ and a standard formatting markdown document to format Mastodon toots. (:pull:`1469`).
 
 v0.45.0 (2023-09-05)
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