Update mocha requirement from ~> 0.14 to ~> 2.4

[dependabot]

Updates the requirements on mocha to permit the latest version.

Changelog

Sourced from mocha's changelog.

2.4.0

External changes

• Improve rendering of keyword arguments (#652) - thanks to @​casperisfine

Internal changes

• Improvements to #mocha_inspect unit tests (#650)

2.3.0

External changes

• Fix nested parameter matching for keyword arguments (f94e2504, #648) - thanks to @​CodingAnarchy for reporting

2.2.0

External changes

• Support multiple methods in responds_with matcher (f086b7e4, #578) - thanks to @​vlad-pisanov for the suggestion

• Add block syntax for sequences (93fdffd, #61)

• Improve sequence failure message (0800c6ff, #60)

• Drop support for Ruby v2.0 (85848fb0, #642)

• Include the original test name in expired stub error messages (ca3ff8eb, #641, #642) - thanks to @​casperisfine

• Avoid rubocop directive ending up in YARD docs (2a9ee81a)

• Update docs to fix those for Mock#method_missing (cee0bad6)

• Reinstate missing CNAME for GitHub Pages site (da67bb0d)

• Use Ruby v1.9 Hash syntax in docs (6de20726, #625)

• Add missing YARD tag for API#sequence name param (343c5979)

• Add missing YARD tag for API#states name param (f798df83)

Internal changes

• Tidy up Minitest vs MiniTest references (#626, #614, #615) - thanks to @​zenspider & @​Maimer for their help
• Add Ruby v3.3 to CI build matrix (ce31b544)

2.1.0

External changes

• Fix compatibility with Minitest (#614) - thanks to @​kyrofa & @​manewitz for reporting and to @​zenspider for his input

Internal changes

• Update URLs for links to Ruby & MIT licenses (d6470af4)

2.0.4

... (truncated)

Commits

• 5a3a208 [skip ci] Update documentation for v2.4.0
• c973ca5 Bump version to 2.4.0 & prepare for release
• 4ea9e38 Improve rendering of keyword arguments
• 19a3d21 Improve unit tests for Hash#mocha_inspect
• 12a1df8 Improve unit tests for Array#mocha_inspect
• a50f9e5 [skip ci] Update documentation for v2.3.0
• 49750a3 Bump version to 2.3.0 & prepare for release
• f94e250 Fix nested parameter matching for keyword arguments
• 5324009 [skip ci] Update documentation for v2.2.0
• 76495e1 Bump version to 2.2.0 & prepare for release
• Additional commits viewable in compare view

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[zarifmahfuz]

@dependabot rebase