fix: allow more spaces for .tool-versions (#94)

* update: allow more spaces for .tool-versions

* [autofix.ci] apply automated fixes

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Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/utils.ts

@@ -31,7 +31,7 @@ const FILE_VERSION_READERS = {
   "package.json": (content: string) =>
     JSON.parse(content).packageManager?.split("bun@")?.[1],
   ".tool-versions": (content: string) =>
-    content.match(/^bun\s?(?<version>.*?)$/m)?.groups?.version,
+    content.match(/^bun\s*(?<version>.*?)$/m)?.groups?.version,
   ".bumrc": (content: string) => content, // https://github.com/owenizedd/bum
   ".bun-version": (content: string) => content,
 };