Add CHANGELOG entries.

CHANGELOG.md

@@ -1,4 +1,11 @@
 ## 0.59.0 (Unreleased)
+
+NOTES:
+
+* provider: Updates to Go 1.20, the last release that will run on any release of Windows 7, 8, Server 2008 and Server 2012. A future release will update to Go 1.21, and these platforms will no longer be supported
+* provider: Updates to Go 1.20, the last release that will run on macOS 10.13 High Sierra or 10.14 Mojave. A future release will update to Go 1.21, and these platforms will no longer be supported
+* provider: Updates to Go 1.20. The provider will now notice the `trust-ad` option in `/etc/resolv.conf` and, if set, will set the "authentic data" option in outgoing DNS requests in order to better match the behavior of the GNU libc resolver
+
 ## 0.58.0 (August 10, 2023)
 
 FEATURES: