Radius v0.39.0-rc1

What's Changed

## changelog

• Update version to 0.38 in versions.yaml by @ytimocin in #7924
• Bump bicep-types from 99cdcee to d936309 by @dependabot in #7929
• Implementation of Dapr Building Block: Configuration Store by @SoTrx in #7906
• Updating and reformatting the release doc by @ytimocin in #7933
• Update the timeout of the clean-up cluster step to 1h by @ytimocin in #7938
• Add dapr-sts* namespaces to be deleted to the clean-up workflow by @ytimocin in #7942
• Update golangci-lint version and fix new warnings by @ytimocin in #7951
• Improve validation and simplify database tests by @rynowak in #7949
• Separating purge old images and purge Azure test resources workflows by @ytimocin in #7937
• Bump peter-evans/create-pull-request from 6 to 7 in the all group by @dependabot in #7904
• Bump bicep-types from d936309 to ebba845 by @dependabot in #7957
• Add an in-memory data store by @rynowak in #7950
• Removing bicep workaround + minor cleanup by @sk593 in #7965
• Update the bicep extension used in the dev container by @brooke-hamilton in #7969
• Implement PostgreSQL datastore by @rynowak in #7961
• Add a PR Checklist for Contributions by @kachawla in #7921
• Bump bicep-types from ebba845 to 96b34cb by @dependabot in #7971
• Fix compiler and test failures with latest version of sigs.k8s.io/controller-runtime by @brooke-hamilton in #7979
• Bump the all group across 1 directory with 38 updates by @kachawla in #7981
• Implementation of resource providers and resource types registration by @rynowak in #7967
• Release 0.39: Create RC release by @kachawla in #7983

Full Changelog: v0.38.0-rc1...v0.39.0-rc1