release: 151.0.0 (#3956)

Hotfix release for previous release 150.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> This is a release-only PR that bumps package versions and updates
changelog metadata; no runtime code changes are included.
> 
> **Overview**
> Bumps the monorepo version to `151.0.0` and publishes a hotfix
`@metamask/snaps-rpc-methods` `15.1.1` release.
> 
> Updates `snaps-rpc-methods` changelog to include the `15.1.1` entry
(noting the `KeyringOrigin` caveat optionality fix) and adjusts compare
links accordingly.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
2a15feb. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: FrederikBolding

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@metamask/snaps-monorepo",
-  "version": "150.0.0",
+  "version": "151.0.0",
   "private": true,
   "repository": {
     "type": "git",

packages/snaps-rpc-methods/CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [15.1.1]
+
+### Fixed
+
+- Make `KeyringOrigin` caveat explicitly optional ([#3955](https://github.com/MetaMask/snaps/pull/3955))
+
 ## [15.1.0]
 
 ### Added
@@ -609,7 +615,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - The version of the package no longer needs to match the version of all other
     MetaMask Snaps packages.
 
-[Unreleased]: https://github.com/MetaMask/snaps/compare/@metamask/snaps-rpc-methods@15.1.0...HEAD
+[Unreleased]: https://github.com/MetaMask/snaps/compare/@metamask/snaps-rpc-methods@15.1.1...HEAD
+[15.1.1]: https://github.com/MetaMask/snaps/compare/@metamask/snaps-rpc-methods@15.1.0...@metamask/snaps-rpc-methods@15.1.1
 [15.1.0]: https://github.com/MetaMask/snaps/compare/@metamask/snaps-rpc-methods@15.0.2...@metamask/snaps-rpc-methods@15.1.0
 [15.0.2]: https://github.com/MetaMask/snaps/compare/@metamask/snaps-rpc-methods@15.0.1...@metamask/snaps-rpc-methods@15.0.2
 [15.0.1]: https://github.com/MetaMask/snaps/compare/@metamask/snaps-rpc-methods@15.0.0...@metamask/snaps-rpc-methods@15.0.1

packages/snaps-rpc-methods/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@metamask/snaps-rpc-methods",
-  "version": "15.1.0",
+  "version": "15.1.1",
   "description": "MetaMask Snaps JSON-RPC method implementations",
   "keywords": [
     "MetaMask",