Bump lodash from 4.17.20 to 4.17.21 in /docs

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.20 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.20...4.17.21)

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

Author: dependabot[bot]

docs/yarn.lock

@@ -986,10 +986,10 @@
   resolved "https://registry.yarnpkg.com/@emotion/unitless/-/unitless-0.7.5.tgz#77211291c1900a700b8a78cfafda3160d76949ed"
   integrity sha512-OWORNpfjMsSSUBVrRBVGECkhWcULOAJz9ZW8uK9qgxD+87M7jHRcvh/A96XXNhXTLmKcoYSQtBEX7lHMO7YRwg==
 
-"@hack4impact-uiuc/bridge@^1.2.3":
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/@hack4impact-uiuc/bridge/-/bridge-1.2.2.tgz#652b0d80943a99340a5ba535b92176e5d8472452"
-  integrity sha512-J2UT2JLxk25YgcecLXoqPS9fhB5ZNJjXTwmESpKhUbfOHwdYHHAvPBe/qiTDUcNc5cHADw/1zaQ5+un1V0wjgQ==
+"@hack4impact-uiuc/bridge@^1.2.4":
+  version "1.2.6"
+  resolved "https://registry.yarnpkg.com/@hack4impact-uiuc/bridge/-/bridge-1.2.6.tgz#99571688bdddddb17f4cc668d5c98d2c5502814f"
+  integrity sha512-ZAFjdFB3SH27070Qg048aiXxoMvrUrpdlPfvjCYgpH6m9UVa6O4y1R9aik+I7mpQe7i/YLnuUh0XgwJRI7u5fA==
   dependencies:
     "@styled-system/prop-types" "^5.1.5"
     "@styled-system/theme-get" "^5.1.2"
@@ -4368,9 +4368,9 @@ [email protected], lodash.uniq@^4.5.0:
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
 lodash@^4.17.11, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.15:
-  version "4.17.20"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
-  integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.4.0:
   version "1.4.0"