Update dependency dayjs to v1.11.21 (#387)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -27,7 +27,7 @@
     "@material-ui/core": "4.12.4",
     "@material-ui/icons": "4.11.3",
     "chokidar": "3.6.0",
-    "dayjs": "1.11.19",
+    "dayjs": "1.11.21",
     "emotion": "11.0.0",
     "htmr": "0.10.1",
     "jdown": "1.0.5",

yarn.lock

@@ -6236,10 +6236,10 @@ data-urls@^2.0.0:
     whatwg-mimetype "^2.3.0"
     whatwg-url "^8.0.0"
 
-dayjs@1.11.19:
-  version "1.11.19"
-  resolved "https://registry.yarnpkg.com/dayjs/-/dayjs-1.11.19.tgz#15dc98e854bb43917f12021806af897c58ae2938"
-  integrity sha512-t5EcLVS6QPBNqM2z8fakk/NKel+Xzshgt8FFKAn+qwlD1pzZWxh0nVCrvFK7ZDb6XucZeF9z8C7CBWTRIVApAw==
+dayjs@1.11.21:
+  version "1.11.21"
+  resolved "https://registry.yarnpkg.com/dayjs/-/dayjs-1.11.21.tgz#57f87562e62de76f3c704bd2b8d522fc33068eb2"
+  integrity sha512-98IT+HOahAisibz/yjKbzuOBwYcjJ7BCLPzARyHiyEBmRz4fatF+KPJszEHXsGYjUG234aH/cOjW1wwTbKUZlA==
 
 debug@2.6.9, debug@^2.2.0, debug@^2.3.3, debug@^2.6.0, debug@^2.6.9:
   version "2.6.9"