meta: Update CHANGELOG to beta.0 from beta1

Use existing conventions for betas

Author: AbhiPrasad

CHANGELOG.md

@@ -4,7 +4,7 @@
 
 - "You miss 100 percent of the chances you don't take. — Wayne Gretzky" — Michael Scott
 
-## 6.17.0-beta1
+## 6.17.0-beta.0
 
 This beta releases contains several internal refactors that help reduce the bundle size of the SDK and help prep for our [upcoming major release](https://github.com/getsentry/sentry-javascript/issues/4240). There are no breaking changes in this patch unless you are using our internal `Dsn` class. We also deprecated our typescript enums and our internal `API` class. We've detailed how to update your sdk usage if you are using the `Dsn` class or any of the deprecated methods in our [migration documentation](./MIGRATION.md#upgrading-from-6.x-to-6.17.0).