Bump xterm-addon-webgl from 0.3.0 to 0.4.0

Bumps [xterm-addon-webgl](https://github.com/xtermjs/xterm.js) from 0.3.0 to 0.4.0.
- [Release notes](https://github.com/xtermjs/xterm.js/releases)
- [Commits](xtermjs/xterm.js@0.3...0.4)

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

package.json

@@ -277,7 +277,7 @@
     "xterm-addon-ligatures": "^0.2.1",
     "xterm-addon-search": "^0.4.0",
     "xterm-addon-web-links": "^0.2.1",
-    "xterm-addon-webgl": "^0.3.0"
+    "xterm-addon-webgl": "^0.4.0"
   },
   "devDependencies": {
     "@babel/cli": "7.7.0",

yarn.lock

@@ -8953,10 +8953,10 @@ xterm-addon-web-links@^0.2.1:
   resolved "https://registry.yarnpkg.com/xterm-addon-web-links/-/xterm-addon-web-links-0.2.1.tgz#6d1f2ce613e09870badf17615e7a1170a31542b2"
   integrity sha512-2KnHtiq0IG7hfwv3jw2/jQeH1RBk2d5CH4zvgwQe00rLofSJqSfgnJ7gwowxxpGHrpbPr6Lv4AmH/joaNw2+HQ==
 
-xterm-addon-webgl@^0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/xterm-addon-webgl/-/xterm-addon-webgl-0.3.0.tgz#6e3bec9541ab7d04544533cc93741b4b959e730a"
-  integrity sha512-p2SLueOfJkyIqDMOo+e1ViOQjE84cA55qCeJelMz6vLW7htGQz7tX1tXTYWrCHihiggq6LFSGoDf2xpIRDP5Ag==
+xterm-addon-webgl@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/xterm-addon-webgl/-/xterm-addon-webgl-0.4.0.tgz#7b7cdbdbf9b0d06189af20d468d8ea2798382e0f"
+  integrity sha512-2ExOKJQcyv4hUo/d41uMDe7fNZCi42kPtbvG/v+dVj1NwqGD7g1bhuoH2j1iA1vTP5O1fClc6pU9nLBpbwrdZQ==
 
 xterm@~4.2.0:
   version "4.2.0"