jQuery: edit 2024 README and add April 2024 update

alpha/engagements/2024/jQuery/README.md

@@ -11,13 +11,14 @@ in key areas, including:
 
 ### Timeline
 
-This engagement started in December 2022.
+This engagement started in December 2022. Work in 2024 is being done with carryover funds from 2023.
 
 ### Monthly Updates
 
 * [Janurary 2024](update-2024-01.md)
 * [February 2024](update-2024-02.md)
 * [March 2024](update-2024-03.md)
+* [April 2024](update-2024-04.md)
 
 ### Primary Contacts
 

alpha/engagements/2024/jQuery/update-2024-04.md

@@ -0,0 +1,26 @@
+# Update 2024-04
+
+## jQuery Testing Infrastructure
+
+Work has been completed to migrate testing infrastructure on four jQuery projects. jQuery Core (both `main` and `3.x-stable` branches), [jQuery Migrate](https://github.com/jquery/jquery-migrate/pull/503), and [jQuery UI](https://github.com/jquery/jquery-ui/pull/2221) were completed previously. Similar work has now been completed for [jQuery Color](https://github.com/jquery/jquery-color/pull/135). This includes:
+
+- Migrating the testing scripts from `grunt` to `npm` scripts.
+- Migrating QUnit test suite from TestSwarm, and the old Jenkins server, to GitHub Actions.
+- Migrating QUnit test suite from Karma to using [Selenium WebDriver](https://www.selenium.dev/documentation/webdriver/) for local testing, and from testswarm-browserstack to directly [BrowserStack's REST API](https://github.com/browserstack/api) for CI testing.
+- Building a standalone test server using Express and mock middleware.
+
+Now that this is complete, we are almost ready to decommission the jenkins.jquery.com, as well as the infrastructure for TestSwarm. We will wait a few weeks to test jQuery UI after its recent 1.13.3 release in case any issues are found.
+
+## plugins.jquery.com
+
+The jQuery plugins site archive has been deployed. This is a static site that contains the contents of the old plugins.jquery.com site. The site is available at [https://plugins.jquery.com/](https://plugins.jquery.com/).
+
+## healthyweb.org
+
+As part of the [Healthy Web Checkup campaign](https://openjsf.org/blog/healthy-web-checkup), the OpenJS Foundation has been [working with the jQuery team](https://blog.jquery.com/2024/04/17/upgrading-jquery-working-towards-a-healthy-web/) to encourage users to improve the security of their sites. Updating jQuery is a small part of that, but an old jQuery is often a sign of a site that hasn't been maintained.
+
+A tool has been deployed to healthyweb.org that can check the version of jQuery on a site and provide guidance on how to update it. The tool is available at [https://healthyweb.org/](https://healthyweb.org/). Source at <https://github.com/jquery/jquery-detect>.
+
+## gzip issue for some CDN files
+
+The jQuery team received a report that some files on the new CDN (Fastly) were not being gzipped. We are still investigating, but for now have enabled a gzip override at the Fastly level, in addition to what nginx already does at the origin.