Bump xterm-addon-webgl from 0.15.0-beta.7 to 0.15.0-beta.8

Bumps [xterm-addon-webgl](https://github.com/xtermjs/xterm.js) from 0.15.0-beta.7 to 0.15.0-beta.8.
- [Release notes](https://github.com/xtermjs/xterm.js/releases)
- [Commits](https://github.com/xtermjs/xterm.js/commits)

---
updated-dependencies:
- dependency-name: xterm-addon-webgl
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -56,7 +56,7 @@
     "xterm-addon-fit": "^0.7.0",
     "xterm-addon-ligatures": "^0.7.0-beta.1",
     "xterm-addon-web-links": "^0.9.0-beta.1",
-    "xterm-addon-webgl": "^0.15.0-beta.1"
+    "xterm-addon-webgl": "^0.15.0-beta.8"
   },
   "devDependencies": {
     "@npezza93/spectron": "^23.0.0",

yarn.lock

@@ -3113,10 +3113,10 @@ xterm-addon-web-links@^0.9.0-beta.1:
   resolved "https://registry.yarnpkg.com/xterm-addon-web-links/-/xterm-addon-web-links-0.9.0-beta.1.tgz#0aa84c4bdb4cce5c4098fd1e9fdd6b4eba2605a5"
   integrity sha512-h9hr4KZI2XYUuuxgRtR8Cd9Pj3nzR+kts55bsuiY7eW5Wsm4Bo/YUmnaYR0XiCaw3I2gl9E6oZ70vJle0ZBnrQ==
 
-xterm-addon-webgl@^0.15.0-beta.1:
-  version "0.15.0-beta.7"
-  resolved "https://registry.yarnpkg.com/xterm-addon-webgl/-/xterm-addon-webgl-0.15.0-beta.7.tgz#ab247b499f61e8eebff92e08ec5ca999d87e06af"
-  integrity sha512-7WCI/D6uFNp3y9TeTsbSo1h7gCy4h/yP2lWn8ZEjCaiGvO11DbKMq17fbiwaR3YmGWXoRKkcLaNIiqxFnjKO4w==
+xterm-addon-webgl@^0.15.0-beta.8:
+  version "0.15.0-beta.8"
+  resolved "https://registry.yarnpkg.com/xterm-addon-webgl/-/xterm-addon-webgl-0.15.0-beta.8.tgz#2005198582f6f1f4a9b2612b9354c0bcc9f148d8"
+  integrity sha512-HjTr9bi3FvdOIPaaIpih6qdHX2z+H7sQPluLj5KzwCqRiEVUVRi19dl8SdHjf6dCmN3GahMhjV7D+zxHi2pLTw==
 
 xterm@^5.2.0-beta.1:
   version "5.2.0-beta.31"