[KeyVault] - Prepare for GA release

[maorleger]

In order to prepare for GA release, ensure the following have been considered for all 4 packages:

• Regenerate code from the stable 7.3 swagger when available for all 4 libraries
• API view is approved (all 4 likely will have changes - either due to new RBAC roles or just service version change)
• Version constants are updated to remove the "-beta.x" suffix
• Documentation pass: ensure it meets this bar and that generated docs look as expected
• Ensure release artifacts can be installed cleanly
• Ensure upgrade path succeeds without breaking changes (use existing GA package, run a few well-known scenarios, then upgrade and rerun)
• Add a link to release policy grammar, see https://github.com/Azure/azure-sdk-for-js/pull/20941/files as an example
• Ensure any language-specific necessary action items have been added and addressed

[maorleger]

You can use Azure/azure-rest-api-specs@e2ef44b to regenerate from