Framework: Bump deprecation version for gutenberg_get_post_from_context

docs/designers-developers/developers/backward-compatibility/deprecations.md

@@ -2,6 +2,10 @@
 
 For features included in the Gutenberg plugin, the deprecation policy is intended to support backward compatibility for two minor plugin releases, when possible. Features and code included in a stable release of WordPress are not included in this deprecation timeline, and are instead subject to the [versioning policies of the WordPress project](https://make.wordpress.org/core/handbook/about/release-cycle/version-numbering/). The current deprecations are listed below and are grouped by _the version at which they will be removed completely_. If your plugin depends on these behaviors, you must update to the recommended alternative before the noted version.
 
+## 8.3.0
+
+- The PHP function `gutenberg_get_post_from_context` has been removed. Use [Block Context](https://github.com/WordPress/gutenberg/blob/master/docs/designers-developers/developers/block-api/block-context.md) instead.
+
 ## 5.5.0
 
 - The PHP function `gutenberg_init` has been removed.

lib/compat.php

@@ -170,7 +170,7 @@ function gutenberg_get_post_from_context() {
 		return null;
 	}
 
-	_deprecated_function( __FUNCTION__, '8.0.0' );
+	_deprecated_function( __FUNCTION__, '8.1.0' );
 
 	if ( ! in_the_loop() ) {
 		rewind_posts();