Bump vue-template-compiler from 2.5.21 to 2.5.22

Bumps [vue-template-compiler](https://github.com/vuejs/vue) from 2.5.21 to 2.5.22.
- [Release notes](https://github.com/vuejs/vue/releases)
- [Commits](https://github.com/vuejs/vue/compare/v2.5.21...v2.5.22)

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

package.json

@@ -63,7 +63,7 @@
 		"pressbooks-build-tools": "^1.2.0",
 		"sass": "^1.15.2",
 		"sass-loader": "^7.1.0",
-		"vue-template-compiler": "^2.5.21"
+		"vue-template-compiler": "^2.5.22"
 	},
 	"dependencies": {
 		"aetna": "^1.0.0-alpha.22",