Bump dot-prop from 5.1.0 to 5.3.0 in /functions

Bumps [dot-prop](https://github.com/sindresorhus/dot-prop) from 5.1.0 to 5.3.0.
- [Release notes](https://github.com/sindresorhus/dot-prop/releases)
- [Commits](sindresorhus/dot-prop@v5.1.0...v5.3.0)

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

functions/yarn.lock

@@ -653,9 +653,9 @@ doctrine@^3.0.0:
     esutils "^2.0.2"
 
 dot-prop@^5.1.0:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/dot-prop/-/dot-prop-5.1.0.tgz#bdd8c986a77b83e3fca524e53786df916cabbd8a"
-  integrity sha512-n1oC6NBF+KM9oVXtjmen4Yo7HyAVWV2UUl50dCYJdw2924K6dX9bf9TTTWaKtYlRn0FEtxG27KS80ayVLixxJA==
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/dot-prop/-/dot-prop-5.3.0.tgz#90ccce708cd9cd82cc4dc8c3ddd9abdd55b20e88"
+  integrity sha512-QM8q3zDe58hqUqjraQOmzZ1LIH9SWQJTlEKCH4kJ2oQvLZk7RbQXvtDM2XEq3fwkV9CCvvH4LA0AV+ogFsBM2Q==
   dependencies:
     is-obj "^2.0.0"