Fix/154 PHP Version Check

[bmarshall511]

Description of the Change

Added a minimum PHP version check for 7.4.

Closes #154

How to test the Change

1. Spin up the site with a version of PHP below 7.4
2. Verify an admin notice has been added alerting the user of the failed check

Changelog Entry

Added - >=PHP 7.4 version check

Credits

Props @bmarshall511

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.

[faisal-alvi]

@bmarshall511 Thank you for the PR, LGTM. I tested it and saw the notice when the PHP version is below the minimum required. However, outlined a few minor tweaks below.

[bmarshall511]

@bmarshall511 Thank you for the PR, LGTM. I tested it and saw the notice when the PHP version is below the minimum required. However, outlined a few minor tweaks below.

Thanks for taking a look @faisal-alvi! Updates made, ready for your review again.

[faisal-alvi]

@bmarshall511 The cypress tests are failing, I re ran the failed tests but they are still failing. I can see they passed in your first commit, but failed in the latest, can you please check it?

https://github.com/10up/publisher-media-kit/actions/runs/6352469169/job/17304966900#step:9:164

[faisal-alvi]

Note: The failed cypress tests are supposed to be fixed in #166

Let's wait until that is merged.

[ankitguptaindia]

Test Report: ✅

PR works as expected.

When Plugin is already activated and PHP is downgraded later:

When activating the plugin on PHP below 7.4:

[faisal-alvi]

Manually updated the minimum required PHP version in the code to 8.2 to test in the 8.1 environment and it worked fine.

[faisal-alvi]

@jeffpaul can you please help to merge this one?