High Severity: Prototype Pollution in vulnerable module shvl@2.0.1

[andrew-itscript]

• vuex-persistedstate version: 3.1.0 , 4.0.0-beta.2
• node version: 12.6.1
• npm (or yarn) version: 6.13.4

Problem description:
Snyk reported recently about High Severity: Prototype Pollution in vulnerable module shvl@2.0.1 . The vuex-persistedstate project depends on shvl and therefore became listed as vulnerable primary dependency in our production project. Please check links below:

• https://snyk.io/test/npm/vuex-persistedstate/3.1.0
• https://snyk.io/test/npm/vuex-persistedstate/4.0.0-beta.2

Could you have a look and provide fix please?