Bump @wordpress/blocks from 14.14.0 to 14.15.0

---
updated-dependencies:
- dependency-name: "@wordpress/blocks"
  dependency-version: 14.15.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -57,7 +57,7 @@
 		"@wordpress/api-fetch": "^7.26.0",
 		"@wordpress/babel-preset-default": "^7.42.0",
 		"@wordpress/block-editor": "^14.20.0",
-		"@wordpress/blocks": "^14.14.0",
+		"@wordpress/blocks": "^14.15.0",
 		"@wordpress/components": "^29.11.0",
 		"@wordpress/compose": "^7.26.0",
 		"@wordpress/core-data": "^7.25.0",