Backport of Stage rc release into release/1.20.x (#21772)

backport of commit d311f2b

Co-authored-by: Sarah Alsmiller <sarah.alsmiller@hashicorp.com>

CHANGELOG.md

@@ -1,3 +1,33 @@
+## 1.20.0-rc1 (September 19, 2024)
+
+SECURITY:
+
+* Explicitly set 'Content-Type' header to mitigate XSS vulnerability. [[GH-21704](https://github.com/hashicorp/consul/issues/21704)]
+* Implement HTML sanitization for user-generated content to prevent XSS attacks in the UI. [[GH-21711](https://github.com/hashicorp/consul/issues/21711)]
+* UI: Remove codemirror linting due to package dependency [[GH-21726](https://github.com/hashicorp/consul/issues/21726)]
+* Upgrade Go to use 1.22.7. This addresses CVE 
+[CVE-2024-34155](https://nvd.nist.gov/vuln/detail/CVE-2024-34155) [[GH-21705](https://github.com/hashicorp/consul/issues/21705)]
+* Upgrade to support aws/aws-sdk-go `v1.55.5 or higher`. This resolves CVEs
+[CVE-2020-8911](https://nvd.nist.gov/vuln/detail/cve-2020-8911) and 
+[CVE-2020-8912](https://nvd.nist.gov/vuln/detail/cve-2020-8912). [[GH-21684](https://github.com/hashicorp/consul/issues/21684)]
+* ui: Pin a newer resolution of Braces [[GH-21710](https://github.com/hashicorp/consul/issues/21710)]
+* ui: Pin a newer resolution of Codemirror [[GH-21715](https://github.com/hashicorp/consul/issues/21715)]
+* ui: Pin a newer resolution of Markdown-it [[GH-21717](https://github.com/hashicorp/consul/issues/21717)]
+* ui: Pin a newer resolution of ansi-html [[GH-21735](https://github.com/hashicorp/consul/issues/21735)]
+
+FEATURES:
+
+* server: remove v2 tenancy, catalog, and mesh experiments [[GH-21592](https://github.com/hashicorp/consul/issues/21592)]
+
+IMPROVEMENTS:
+
+* security: upgrade ubi base image to 9.4 [[GH-21750](https://github.com/hashicorp/consul/issues/21750)]
+* connect: Add Envoy 1.31 and 1.30 to support matrix [[GH-21616](https://github.com/hashicorp/consul/issues/21616)]
+
+BUG FIXES:
+
+* jwt-provider: change dns lookup family from the default of AUTO which would prefer ipv6 to ALL if LOGICAL_DNS is used or PREFER_IPV4 if STRICT_DNS is used to gracefully handle transitions to ipv6. [[GH-21703](https://github.com/hashicorp/consul/issues/21703)]
+
 ## 1.19.2 (August 26, 2024)
 
 SECURITY: