build(deps): bump voluptuous-serialize from 2.1.0 to 2.2.0 (#266)

Bumps [voluptuous-serialize](https://github.com/balloob/voluptuous-serialize) from 2.1.0 to 2.2.0.
- [Release notes](https://github.com/balloob/voluptuous-serialize/releases)
- [Commits](home-assistant-libs/voluptuous-serialize@2.1.0...2.2.0)

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

homeassistant_cli/package_constraints.txt

@@ -13,7 +13,7 @@ pyyaml>=4.2b1
 requests==2.22.0
 ruamel.yaml==0.15.100
 voluptuous==0.11.5
-voluptuous-serialize==2.1.0
+voluptuous-serialize==2.2.0
 
 # 2.8 breaks requests-mock
 idna==2.8