Bump shell-quote from 1.7.2 to 1.7.3 in /landing-pages (#616)

Bumps [shell-quote](https://github.com/substack/node-shell-quote) from 1.7.2 to 1.7.3.
- [Release notes](https://github.com/substack/node-shell-quote/releases)
- [Changelog](https://github.com/substack/node-shell-quote/blob/master/CHANGELOG.md)
- [Commits](https://github.com/substack/node-shell-quote/compare/v1.7.2...1.7.3)

---
updated-dependencies:
- dependency-name: shell-quote
  dependency-type: indirect
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/landing-pages/yarn.lock b/landing-pages/yarn.lock
index 6b6d02e..8a62150 100644
--- a/landing-pages/yarn.lock
+++ b/landing-pages/yarn.lock
@@ -7391,9 +7391,9 @@
   integrity sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=
 
 shell-quote@^1.6.1:
-  version "1.7.2"
-  resolved "https://registry.yarnpkg.com/shell-quote/-/shell-quote-1.7.2.tgz#67a7d02c76c9da24f99d20808fcaded0e0e04be2"
-  integrity sha512-mRz/m/JVscCrkMyPqHc/bczi3OQHkLTqXHEFu0zDhK/qfv3UcOA4SVmRCLmos4bhjr9ekVQubj/R7waKapmiQg==
+  version "1.7.3"
+  resolved "https://registry.yarnpkg.com/shell-quote/-/shell-quote-1.7.3.tgz#aa40edac170445b9a431e17bb62c0b881b9c4123"
+  integrity sha512-Vpfqwm4EnqGdlsBFNmHhxhElJYrdfcxPThu+ryKS5J8L/fhAwLazFZtq+S+TWZ9ANj2piSQLGj6NQg+lKPmxrw==
 
 signal-exit@^3.0.0, signal-exit@^3.0.2:
   version "3.0.2"