Update eslint-plugin-vue and disable the new "vue/no-mutating-props" rule

[cdrini]

@dependabot tried to update "eslint-plugin-vue" to 7.2.0, but a new rule is incompatible with how a large chunk of our code is written. Let's update and disabled the rule.

Summary of Requirements

• Update eslint-plugin-vue to 7.2.0 (See Bump eslint-plugin-vue from 6.2.2 to 7.2.0 #4230)
• Disable "vue/no-mutating-props" rule

Context

See vuejs/eslint-plugin-vue#1371 for details on why we're disabling the rule as opposed to changing our code.

[Sabreen-Parveen]

@cdrini I would like to work on this issue.

[cdrini]

Go for it, @Sabreen-Parveen !