Bump version to 0.2.1 for OIDC publishing verification

No code changes — just the workflow infrastructure switched to npm Trusted
Publishing in the previous commit. Tagging v0.2.1 to validate the OIDC flow
end-to-end, since dry-run against an already-published version fails the
client-side version check before reaching the registry credential exchange.

Author: nixel2007

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@1c-syntax/codemirror-lang-bsl",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "1C:Enterprise / OneScript (BSL) language support for CodeMirror 6",
   "keywords": [
     "codemirror",