Prep version v0.20.1 (#1464)

* bump version to v0.20.1

* Update multimod ver

VERSION

@@ -1 +1 @@
-v0.20.0
+v0.20.1

docs/releases/v0.20.1.md

@@ -0,0 +1,12 @@
+# Changelog
+
+## [v0.20.1](https://github.com/aws-observability/aws-otel-collector/tree/v0.20.1) (2022-09-06)
+
+[Full Changelog](https://github.com/aws-observability/aws-otel-collector/compare/v0.20.0...v0.20.1)
+
+**Merged pull requests:**
+
+- Update GHA runners to use go ver ~1.18.6 [\#1462](https://github.com/aws-observability/aws-otel-collector/pull/1462) ([bryan-aguilar](https://github.com/bryan-aguilar))
+
+
+\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*

versions.yaml

@@ -16,7 +16,7 @@ module-sets:
   #Github Repo for Go Multimod: https://github.com/open-telemetry/opentelemetry-go-build-tools/tree/main/multimod
   #Goals: Centralize all the module set into one files and use this version yaml to manage all the module set during the release.
   adot-base:
-    version: v0.18.0
+    version: v0.20.1
     modules:
       - github.com/aws-observability/aws-otel-collector
       - github.com/aws-observability/aws-otel-collector/pkg/lambdacomponents