Update dependency express-handlebars to v6

[mend-for-github-com]

This PR contains the following updates:

Package	Type	Update	Change
express-handlebars	dependencies	major	^5.3.4 -> ^6.0.0

By merging this PR, the issue #2 will be automatically resolved and closed:

Severity	CVSS Score	Vulnerability
Critical	9.8	CVE-2021-44906

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Release Notes

express-handlebars/express-handlebars (express-handlebars)

v6.0.0

Compare Source

Features

• rewrite in typescript (188d3c4)

BREAKING CHANGES

• Change minimum node version to 12

5.3.5 (2021-11-13)

Bug Fixes

• update deps (b516cff)

5.3.4 (2021-09-23)

Bug Fixes

• deps: update dependency glob to ^7.2.0 (15c77f5)

5.3.3 (2021-08-05)

Bug Fixes

• deps: update dependency graceful-fs to ^4.2.7 (94a4073)

5.3.2 (2021-05-06)

Bug Fixes

• deps: update dependency glob to ^7.1.7 (8222f00)

5.3.1 (2021-05-04)

Bug Fixes

• add note about security (78c47a2)

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