chore: @genkit-ai/compat-oai version bump

@genkit-ai/compat-oai version from 1.14.1 to 1.15.0-rc.0

Author: genkit-releaser

js/plugins/compat-oai/package.json

@@ -11,7 +11,7 @@
     "genai",
     "generative-ai"
   ],
-  "version": "1.14.1",
+  "version": "1.15.0-rc.0",
   "type": "commonjs",
   "repository": {
     "type": "git",