Bump xterm-addon-ligatures from 0.7.0-beta.1 to 0.7.0-beta.4

Bumps [xterm-addon-ligatures](https://github.com/xtermjs/xterm.js) from 0.7.0-beta.1 to 0.7.0-beta.4.
- [Release notes](https://github.com/xtermjs/xterm.js/releases)
- [Commits](https://github.com/xtermjs/xterm.js/commits)

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

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

package.json

@@ -55,7 +55,7 @@
     "xterm": "^5.2.0-beta.49",
     "xterm-addon-canvas": "^0.4.0-beta.1",
     "xterm-addon-fit": "^0.7.0",
-    "xterm-addon-ligatures": "^0.7.0-beta.1",
+    "xterm-addon-ligatures": "^0.7.0-beta.4",
     "xterm-addon-web-links": "^0.9.0-beta.1",
     "xterm-addon-webgl": "^0.15.0-beta.1"
   },

yarn.lock

@@ -3071,10 +3071,10 @@ xterm-addon-fit@^0.7.0:
   resolved "https://registry.yarnpkg.com/xterm-addon-fit/-/xterm-addon-fit-0.7.0.tgz#b8ade6d96e63b47443862088f6670b49fb752c6a"
   integrity sha512-tQgHGoHqRTgeROPnvmtEJywLKoC/V9eNs4bLLz7iyJr1aW/QFzRwfd3MGiJ6odJd9xEfxcW36/xRU47JkD5NKQ==
 
-xterm-addon-ligatures@^0.7.0-beta.1:
-  version "0.7.0-beta.1"
-  resolved "https://registry.yarnpkg.com/xterm-addon-ligatures/-/xterm-addon-ligatures-0.7.0-beta.1.tgz#f9a47f7005eaa0e09ce72be9871d5475903972ea"
-  integrity sha512-Pqb7Dzw55DTsgaCJgohLblfYYn/3JMGhoDxSXRxz0fmOx5AATja4Hax+yBSRqIwdk9xF7449fOGPz9usl3v+xQ==
+xterm-addon-ligatures@^0.7.0-beta.4:
+  version "0.7.0-beta.4"
+  resolved "https://registry.yarnpkg.com/xterm-addon-ligatures/-/xterm-addon-ligatures-0.7.0-beta.4.tgz#9a623dccef9eb84257b9887c603ba1ab5437d52a"
+  integrity sha512-5lMMKTVZghrVmCF1OSrKJSophKQX2ns6FKzoty8DbcLwj16Tpjd8dR9vrQcDFLJGy5d2vvLI7mu2B0AokPSejQ==
   dependencies:
     font-finder "^1.1.0"
     font-ligatures "^1.4.1"