Update chefstyle requirement from 1.4.5 to 1.5.0 and pin parallel for ruby 2.4

[dependabot-preview]

Updates the requirements on chefstyle to permit the latest version.

Changelog

Sourced from chefstyle's changelog.

v1.5.0 (2020-11-05)

Merged Pull Requests

• Update to RuboCop 1.2 #110 (tas50)
• Enable new cops #111 (tas50)

v1.4.5 (2020-10-12)

Merged Pull Requests

• Update to RuboCop 0.93.1 #108 (tas50)

v1.4.4 (2020-10-08)

Merged Pull Requests

• Update to Rubocop 0.93 #107 (tas50)

v1.4.3 (2020-09-29)

Merged Pull Requests

• Remove yaml from unless defined for now #106 (tas50)

v1.4.2 (2020-09-28)

Merged Pull Requests

• Update classs in unless_defined_required #104 (tas50)
• Update RuboCop engine to 0.92 #105 (tas50)

v1.4.0 (2020-09-17)

Merged Pull Requests

• Add cop for chef-utils/dist requires #99 (ramereth)
• Enable Lint/Syntax #101 (tas50)
• Enable 7 more cops to simplify our code #102 (tas50)
• Update RuboCop engine to 0.91 #103 (tas50)

v1.3.2 (2020-09-01)

Merged Pull Requests

• Add custom cops to Chefstyle #97 (tas50)
• Add ChefRuby/RequireNetHttps #98 (tas50)
• Update RuboCop to 0.90 #100 (tas50)

v1.2.1 (2020-08-10)

Merged Pull Requests

• Bump to RuboCop 0.89.1 #96 (tas50)

v1.2.0 (2020-07-14)

Commits

• 57cca8f Bump version to 1.5.0 by Chef Expeditor
• d15ef93 Merge pull request #111 from chef/new_cops
• 3e47984 Enable new cops
• 8a7b0dc Bump version to 1.4.6 by Chef Expeditor
• e3f3a13 Merge pull request #110 from chef/rubocop_1.1
• f657c2a Fix rakefile to validate RuboCop 1.0+ rules
• 32091d9 Update to RuboCop 1.2
• 5a9d289 Update CHANGELOG.md to reflect the promotion of 1.4.5
• See full diff in compare view

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[dependabot-preview]

A newer version of chefstyle exists, but since this PR has been edited by someone other than Dependabot I haven't updated it. You'll get a PR for the updated version as normal once this PR is merged.