Add CHANGELOG for v0.39.0 (#395)

CHANGELOG.md

@@ -1,3 +1,15 @@
+## v0.39.0 [2023-12-12]
+
+_What's new?_
+
+- The plugin can now be downloaded and used with the [Steampipe CLI](https://steampipe.io/install/steampipe.sh), as a [Postgres FDW](https://steampipe.io/install/postgres.sh), as a [SQLite extension](https://steampipe.io/install/sqlite.sh) and as a standalone [exporter](https://steampipe.io/install/export.sh).
+- The table docs have been updated to provide corresponding example queries for Postgres FDW and SQLite extension.
+- Docs license updated to match Steampipe [CC BY-NC-ND license](https://github.com/turbot/steampipe-plugin-github/blob/main/docs/LICENSE).
+
+_Dependencies_
+
+- Recompiled plugin with [steampipe-plugin-sdk v5.8.0](https://github.com/turbot/steampipe-plugin-sdk/blob/main/CHANGELOG.md#v580-2023-12-11) that includes plugin server enacapsulation for in-process and GRPC usage, adding Steampipe Plugin SDK version to `_ctx` column, and fixing connection and potential divide-by-zero bugs. ([#394](https://github.com/turbot/steampipe-plugin-github/pull/394))
+
 ## v0.38.0 [2023-12-06]
 
 _What's new?_