ci: Attest release artifacts (#4816)

Co-authored-by: oSumAtrIX <johan.melkonyan1@web.de>

.releaserc

@@ -22,7 +22,7 @@
       {
         "assets": [
           "CHANGELOG.md",
-          "gradle.properties",
+          "gradle.properties"
         ],
         "message": "chore: Release v${nextRelease.version} [skip ci]\n\n${nextRelease.notes}"
       }
@@ -33,16 +33,16 @@
         "assets": [
           {
             "path": "patches/build/libs/patches-!(*sources*|*javadoc*).rvp?(.asc)"
-          },
+          }
         ],
-        successComment: false
+        "successComment": false
       }
     ],
     [
       "@saithodev/semantic-release-backmerge",
       {
-        backmergeBranches: [{"from": "main", "to": "dev"}],
-        clearWorkspace: true
+        "backmergeBranches": [{"from": "main", "to": "dev"}],
+        "clearWorkspace": true
       }
     ]
   ]