Bump vue-multiselect from 2.1.7 to 2.1.8 in /ui (#448)

Bumps [vue-multiselect](https://github.com/shentao/vue-multiselect) from 2.1.7 to 2.1.8.
- [Release notes](https://github.com/shentao/vue-multiselect/releases)
- [Commits](shentao/vue-multiselect@v2.1.7...v2.1.8)

---
updated-dependencies:
- dependency-name: vue-multiselect
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

ui/core/package.json

@@ -59,7 +59,7 @@
     "vue-flatpickr-component": "^7.0.2",
     "vue-headful": "^2.0.1",
     "vue-moment": "^4.0.0",
-    "vue-multiselect": "^2.1.0",
+    "vue-multiselect": "^2.1.8",
     "vue-notification": "^1.3.12",
     "vue-password-strength-meter": "^1.3.2",
     "vue-pdf": "^4.3.0",

ui/wallet/package.json

@@ -51,7 +51,7 @@
     "vue-flatpickr-component": "^7.0.2",
     "vue-headful": "^2.0.1",
     "vue-moment": "^4.0.0",
-    "vue-multiselect": "^2.1.0",
+    "vue-multiselect": "^2.1.8",
     "vue-notification": "^1.3.12",
     "vue-password-strength-meter": "^1.3.2",
     "vue-pdf": "github:mchumer/vue-pdf#master",

ui/yarn.lock

@@ -11914,10 +11914,10 @@ vue-moment@^4.0.0:
   dependencies:
     moment "^2.19.2"
 
-vue-multiselect@^2.1.0:
-  version "2.1.7"
-  resolved "https://registry.yarnpkg.com/vue-multiselect/-/vue-multiselect-2.1.7.tgz#f27afe3d46482b94810382af7a4826219255c47d"
-  integrity sha512-KIegcN+Ntwg3cbkY/jhw2s/+XJUM0Lpi/LcKFYCS8PrZHcWBl2iKCVze7ZCnRj3w8H7/lUJ9v7rj9KQiNxApBw==
+vue-multiselect@^2.1.8:
+  version "2.1.8"
+  resolved "https://registry.yarnpkg.com/vue-multiselect/-/vue-multiselect-2.1.8.tgz#73839f8fde7f9d01a5771129f940353cd6d74cd8"
+  integrity sha512-bgpvWZlT4EiUUCcwLAR655LdiifeqF62BDL2TLVddKfS/NcdIYVlvOr456N7GQIlBFNbb7vHfq+qOl8mpGAOJw==
 
 vue-notification@^1.3.12:
   version "1.3.20"