message: chore: make content security policy more strict
  This modifies Lambda@Edge function to remove unnecessary permissions in content security policy (CSP).
diff: @@ -12,7 +12,6 @@ const FEATURE_POLICY = {
  'midi': `'none'`,
  'payment': `'none'`,
  'picture-in-picture': `'none'`,
  - 'screen-wake-lock': `'none'`,
  'sync-xhr': `'none'`,
  'usb': `'none'`,
  'xr-spatial-tracking': `'none'`,
  @@ -25,8 +24,7 @@ function generateFeaturePolicyHeader(featurePoicyObject) {
  }
  const NEW_HEADERS = {
  - 'Content-Security-Policy':
  - "default-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data: *.githubusercontent.com",
  + 'Content-Security-Policy': "default-src 'self'",
  'Referrer-Policy': 'no-referrer',
  'Strict-Transport-Security': 'max-age=15768000; includeSubDomains; preload',
  'X-Content-Type-Options': 'nosniff',
  