Bump whatwg-fetch from 3.6.18 to 3.6.19

Bumps [whatwg-fetch](https://github.com/github/fetch) from 3.6.18 to 3.6.19.
- [Release notes](https://github.com/github/fetch/releases)
- [Changelog](https://github.com/JakeChampion/fetch/blob/main/CHANGELOG.md)
- [Commits](JakeChampion/fetch@v3.6.18...v3.6.19)

---
updated-dependencies:
- dependency-name: whatwg-fetch
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -49,7 +49,7 @@
     "paste-html-to-govspeak": "^0.3.0",
     "raven-js": "^3.27.2",
     "url-polyfill": "^1.1.12",
-    "whatwg-fetch": "^3.6.18"
+    "whatwg-fetch": "^3.6.19"
   },
   "resolutions": {
     "stylelint/strip-ansi": "6.0.1",

yarn.lock

@@ -2909,10 +2909,10 @@ vary@~1.1.2:
   resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"
   integrity sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=
 
-whatwg-fetch@^3.6.18:
-  version "3.6.18"
-  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-3.6.18.tgz#2f640cdee315abced7daeaed2309abd1e44e62d4"
-  integrity sha512-ltN7j66EneWn5TFDO4L9inYC1D+Czsxlrw2SalgjMmEMkLfA5SIZxEFdE6QtHFiiM6Q7WL32c7AkI3w6yxM84Q==
+whatwg-fetch@^3.6.19:
+  version "3.6.19"
+  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-3.6.19.tgz#caefd92ae630b91c07345537e67f8354db470973"
+  integrity sha512-d67JP4dHSbm2TrpFj8AbO8DnL1JXL5J9u0Kq2xW6d0TFDbCA3Muhdt8orXC22utleTVj7Prqt82baN6RBvnEgw==
 
 which@^1.3.1:
   version "1.3.1"