message: Remove vuln snippet for "Arbitrary File Write" challenge
  (due to actual vulnerability coming from use of vulnerable
  dependency in package.json which cannot be included by
  snippet parsing due to unavailability of comments in JSON)
diff: @@ -28,10 +28,9 @@ function ensureFileIsPassed ({ file }, res, next) {
  }
  }
  -// vuln-code-snippet start fileWriteChallenge
  function handleZipFileUpload ({ file }, res, next) {
  if (utils.endsWith(file.originalname.toLowerCase(), '.zip')) {
  - if (file.buffer && !utils.disableOnContainerEnv()) { // vuln-code-snippet hide-line
  + if (file.buffer && !utils.disableOnContainerEnv()) {
  const buffer = file.buffer
  const filename = file.originalname.toLowerCase()
  const tempFile = path.join(os.tmpdir(), filename)
  @@ -41,13 +40,13 @@ function handleZipFileUpload ({ file }, res, next) {
  if (err != null) { next(err) }
  fs.close(fd, function () {
  fs.createReadStream(tempFile)
  - .pipe(unzipper.Parse()) // vuln-code-snippet vuln-line fileWriteChallenge
  + .pipe(unzipper.Parse())
  .on('entry', function (entry) {
  const fileName = entry.path
  const absolutePath = path.resolve('uploads/complaints/' + fileName)
  - utils.solveIf(challenges.fileWriteChallenge, () => { return absolutePath === path.resolve('ftp/legal.md') }) // vuln-code-snippet hide-line
  + utils.solveIf(challenges.fileWriteChallenge, () => { return absolutePath === path.resolve('ftp/legal.md') })
  if (absolutePath.includes(path.resolve('.'))) {
  - entry.pipe(fs.createWriteStream('uploads/complaints/' + fileName).on('error', function (err) { next(err) })) // vuln-code-snippet vuln-line fileWriteChallenge
  + entry.pipe(fs.createWriteStream('uploads/complaints/' + fileName).on('error', function (err) { next(err) }))
  } else {
  entry.autodrain()
  }
  @@ -55,13 +54,12 @@ function handleZipFileUpload ({ file }, res, next) {
  })
  })
  })
  - } // vuln-code-snippet hide-line
  + }
  res.status(204).end()
  } else {
  next()
  }
  }
  -// vuln-code-snippet end fileWriteChallenge
  function checkUploadSize ({ file }, res, next) {
  utils.solveIf(challenges.uploadSizeChallenge, () => { return file.size > 100000 })
  