build: let release script parse "next" in versions (#17289)

(cherry picked from commit 1f9ce44)

Author: jelbourn

tools/release/version-name/parse-version.ts

@@ -1,5 +1,5 @@
 /** Regular expression that matches version names and the individual version segments. */
-const versionNameRegex = /^(\d+)\.(\d+)\.(\d+)(?:-(alpha|beta|rc)\.(\d+))?$/;
+const versionNameRegex = /^(\d+)\.(\d+)\.(\d+)(?:-(alpha|beta|next|rc)\.(\d+))?$/;
 
 export class Version {
   constructor(