Bump stringstream from 0.0.5 to 0.0.6 in /frontend

Bumps [stringstream](https://github.com/mhart/StringStream) from 0.0.5 to 0.0.6.
- [Release notes](https://github.com/mhart/StringStream/releases)
- [Commits](mhart/StringStream@v0.0.5...v0.0.6)

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

Author: dependabot[bot]

frontend/yarn.lock

@@ -3166,8 +3166,8 @@ string_decoder@~1.0.0:
     safe-buffer "~5.0.1"
 
 stringstream@~0.0.4:
-  version "0.0.5"
-  resolved "https://registry.yarnpkg.com/stringstream/-/stringstream-0.0.5.tgz#4e484cd4de5a0bbbee18e46307710a8a81621878"
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/stringstream/-/stringstream-0.0.6.tgz#7880225b0d4ad10e30927d167a1d6f2fd3b33a72"
 
 strip-ansi@^3.0.0, strip-ansi@^3.0.1:
   version "3.0.1"