fix retry until

src/config.ts

@@ -73,7 +73,7 @@ function readInlineConfig(): ConfigurationOptionsPartial {
 
 function getOptionalNumber(name: string): number | undefined {
   const value = core.getInput(name)
-  const parsed = z.number().safeParse(value)
+  const parsed = z.string().regex(/^\d+$/).transform(Number).safeParse(value)
   return parsed.success ? parsed.data : undefined
 }