Update dependency grunt-terser to v2

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Type	Update	Change
grunt-terser	dependencies	major	^1.0.0 -> ^2.0.0

By merging this PR, the issue #813 will be automatically resolved and closed:

Severity	CVSS Score	CVE
High	7.5	CVE-2022-25858

---

Release Notes

adascal/grunt-terser (grunt-terser)

v2.0.0

Compare Source

• support [email protected] and async code minify
• update node engine
• added code linting via eslint
• cleanup code

---

• [ ] If you want to rebase/retry this PR, check this box