V1.2.4: Upgrade to Rails 6.1.7.4

[cdadityang]

What kind of change does this PR introduce?

Example: Bug fix, feature, docs update, ...

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality not to work as expected)
• Documentation update
• Others

What is the current behavior?

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What is the new behavior?

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Other information:

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Please check if the PR fulfills these requirements:

• My code follows the code style and contribution guidelines of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings