Bump node-fetch from 2.6.0 to 2.6.1 in /packages/protocol

Bumps [node-fetch](https://github.com/bitinn/node-fetch) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/bitinn/node-fetch/releases)
- [Changelog](https://github.com/node-fetch/node-fetch/blob/master/docs/CHANGELOG.md)
- [Commits](node-fetch/node-fetch@v2.6.0...v2.6.1)

Signed-off-by: dependabot[bot] <support@github.com>

packages/protocol/yarn.lock

@@ -7301,16 +7301,11 @@ node-environment-flags@1.0.6:
     object.getownpropertydescriptors "^2.0.3"
     semver "^5.7.0"
 
-node-fetch@2.6.1:
+node-fetch@2.6.1, node-fetch@^2.6.0:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
   integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
 
-node-fetch@^2.6.0:
-  version "2.6.0"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.0.tgz#e633456386d4aa55863f676a7ab0daa8fdecb0fd"
-  integrity sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA==
-
 node-gyp-build@^4.2.0:
   version "4.2.2"
   resolved "https://registry.yarnpkg.com/node-gyp-build/-/node-gyp-build-4.2.2.tgz#3f44b65adaafd42fb6c3d81afd630e45c847eb66"