Update dependency @gitlab/ui to v18

package.json

@@ -43,7 +43,7 @@
     "@babel/preset-env": "^7.10.1",
     "@gitlab/at.js": "1.5.5",
     "@gitlab/svgs": "1.156.0",
-    "@gitlab/ui": "17.43.0",
+    "@gitlab/ui": "18.0.0",
     "@gitlab/visual-review-tools": "1.6.1",
     "@rails/actioncable": "^6.0.3-1",
     "@sentry/browser": "^5.10.2",

yarn.lock

@@ -848,10 +848,10 @@
   resolved "https://registry.yarnpkg.com/@gitlab/svgs/-/svgs-1.156.0.tgz#2af56246b5d71000ec81abb1281e811a921cdfd1"
   integrity sha512-+b670Sxkjo80Wb4GKMZQ+xvuwu9sVvql8aS9nzw63FLn84QyqXS+jMjvyDqPAW5kly6B1Eg4Kljq0YawJ0ySBg==
 
-"@gitlab/ui@17.43.0":
-  version "17.43.0"
-  resolved "https://registry.yarnpkg.com/@gitlab/ui/-/ui-17.43.0.tgz#2a61ba53aaf8a3325a3eba6753ba57a937bdb656"
-  integrity sha512-3JnzjQtcTWYZGxJfsg58k1oBOrPjWrhwlsW7MD9yHaGm9No71+RP50htck5p5hDRQ+MKxwZ9n4MOON3L8mnjIg==
+"@gitlab/ui@18.0.0":
+  version "18.0.0"
+  resolved "https://registry.yarnpkg.com/@gitlab/ui/-/ui-18.0.0.tgz#5cba4054332d279e5e32c356524c8cf44633ba57"
+  integrity sha512-HEn+HEi5EjSKOpNP5r8wUXpnMAskJ51RB7KHz+p7ULx93/2t6iXFC5lU2ta/TVxEonCpJmFmtIeGuYl8DtG54g==
   dependencies:
     "@babel/standalone" "^7.0.0"
     "@gitlab/vue-toasted" "^1.3.0"