Add schema for JReleaser 1.21.0 (SchemaStore#5087)

* Add schema for JReleaser 1.21.0

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: aalmiray

src/api/json/catalog.json

@@ -3310,8 +3310,9 @@
       "name": "JReleaser",
       "description": "JReleaser config file",
       "fileMatch": ["jreleaser.yml", "jreleaser.json"],
-      "url": "https://www.schemastore.org/jreleaser-1.20.0.json",
+      "url": "https://www.schemastore.org/jreleaser-1.21.0.json",
       "versions": {
+        "1.21.0": "https://www.schemastore.org/jreleaser-1.21.0.json",
         "1.20.0": "https://www.schemastore.org/jreleaser-1.20.0.json",
         "1.19.0": "https://www.schemastore.org/jreleaser-1.19.0.json",
         "1.18.0": "https://www.schemastore.org/jreleaser-1.18.0.json",