Bump xterm-addon-search from 0.2.0-beta2 to 0.2.0-beta4 in /ter… (#1310)

Bumps xterm-addon-search from 0.2.0-beta2 to 0.2.0-beta4.
Signed-off-by: Ndependabot-preview[bot] <support@dependabot.com>

terminus-terminal/yarn.lock

@@ -179,9 +179,9 @@ xterm-addon-ligatures@^0.1.0-beta-2:
     font-ligatures "^1.3.1"
 
 xterm-addon-search@^0.2.0-beta1:
-  version "0.2.0-beta2"
-  resolved "https://registry.yarnpkg.com/xterm-addon-search/-/xterm-addon-search-0.2.0-beta2.tgz#c3173f0a6f207ee9f1848849174ee5d6b6ce8262"
-  integrity sha512-XEcwi2TeFGk2MuIFjiI/OpVXSNO5dGQBvHH3o+9KzqG3ooVqhhDqzwxs092QGNcNCGh8hGn/PWZiczaBBnKm/g==
+  version "0.2.0-beta4"
+  resolved "https://registry.yarnpkg.com/xterm-addon-search/-/xterm-addon-search-0.2.0-beta4.tgz#4b34c4783eba398c256a5bc4cbe76dd0be5356ae"
+  integrity sha512-Qwf2FLQ37rQ3DIFOWvODeUZhW8OBHc2Wmp2ABsFwxZ4/3IpqlAd+VdHz63QdCJbqWpSMDuNeIy0qTjvaGbTcZQ==
 
 xterm-addon-webgl@^0.2.0-beta1:
   version "0.2.0-beta5"