Create repository-settings.md

.github/repository-settings.md

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+# Repository Settings Changes
+
+Tracks changes to this repository's settings by admins/maintainers per [community guidelines](https://github.com/open-telemetry/community/blob/main/docs/how-to-configure-new-repository.md#collaborators-and-teams).
+
+## Changelog
+
+### 2023-11-04
+
+Updating settings to follow the community guidelines
+
+* General
+  * Disabled wikis
+  * Automatically delete head branches - checked
+* Branches
+  * Added rule for `renovate/**/**`