Add Testiny as bronze sponsor

Author: marcphilipp

README.md

@@ -8,7 +8,7 @@ This repository is the home of _JUnit 5_.
 
 * **Gold Sponsors:** [JetBrains](https://jb.gg/junit-logo)
 * **Silver Sponsors:** [Micromata](https://www.micromata.de), [Quo Card](https://quo-digital.jp)
-* **Bronze Sponsors:** [Premium Minds](https://www.premium-minds.com), [Testmo](https://www.testmo.com), [codefortynine](https://codefortynine.com), [Info Support](https://www.infosupport.com), [Stiltsoft](https://stiltsoft.com), [Code Intelligence](https://www.code-intelligence.com), [Route4Me](https://route4me.com/)
+* **Bronze Sponsors:** [Premium Minds](https://www.premium-minds.com), [Testmo](https://www.testmo.com), [codefortynine](https://codefortynine.com), [Info Support](https://www.infosupport.com), [Stiltsoft](https://stiltsoft.com), [Code Intelligence](https://www.code-intelligence.com), [Route4Me](https://route4me.com/), [Testiny](https://www.testiny.io/)
 
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