chore(deps): upgrade momentjs

The issue that made us downgrade moment has been fixed in
ember-moment-shim 3.8.0.
adopted-ember-addons/ember-pikaday#343

package.json

@@ -61,7 +61,7 @@
     "jexl": "^2.3.0",
     "lodash.clonedeep": "^4.5.0",
     "lodash.isequal": "^4.5.0",
-    "moment": "2.24.0",
+    "moment": "^2.29.1",
     "proxy-polyfill": "^0.3.2",
     "sass": "^1.32.8",
     "slugify": "^1.5.0",

yarn.lock

@@ -13721,12 +13721,7 @@ moment-timezone@^0.5.13:
   dependencies:
     moment ">= 2.9.0"
 
-[email protected]:
-  version "2.24.0"
-  resolved "https://registry.yarnpkg.com/moment/-/moment-2.24.0.tgz#0d055d53f5052aa653c9f6eb68bb5d12bf5c2b5b"
-  integrity sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg==
-
-"moment@>= 2.9.0", moment@^2.19.3:
+"moment@>= 2.9.0", moment@^2.19.3, moment@^2.29.1:
   version "2.29.1"
   resolved "https://registry.yarnpkg.com/moment/-/moment-2.29.1.tgz#b2be769fa31940be9eeea6469c075e35006fa3d3"
   integrity sha512-kHmoybcPV8Sqy59DwNDY3Jefr64lK/by/da0ViFcuA4DH0vQg5Q6Ze5VimxkfQNSC+Mls/Kx53s7TjP1RhFEDQ==