A non-production release for development and testing, which will hopefully lead to a "stable" release..

What's Changed Since 3.7.0-alpha3.1:

• Gradle build (zip) by @JNightRide in https://github.com/jMonkeyEngine/jmonkeyengine/pull/2235
• Logic code error (LwjglCanvas - LWJGL3) by @JNightRide in https://github.com/jMonkeyEngine/jmonkeyengine/pull/2238
• Fix SkeletonDebugger deserializing by @tonihele in https://github.com/jMonkeyEngine/jmonkeyengine/pull/2228
• #2224 Fix bug where the clipRect would be left in the openGL state by @richardTingle in https://github.com/jMonkeyEngine/jmonkeyengine/pull/2225
• Logs exception as severe on asset locator instantiation failure by @codex128 in https://github.com/jMonkeyEngine/jmonkeyengine/pull/2232
• stop building with JDK 8 at GitHub Actions by @stephengold in https://github.com/jMonkeyEngine/jmonkeyengine/pull/2254
• Remove material cache, some materials seem not work when cloned by @tonihele in https://github.com/jMonkeyEngine/jmonkeyengine/pull/2255
• solution for issue #2250 (exceptions from Image.setMultiSamples(1)) by @stephengold in https://github.com/jMonkeyEngine/jmonkeyengine/pull/2251
• main.yml: upgrade the wrapper validation action to v3 by @stephengold in https://github.com/jMonkeyEngine/jmonkeyengine/pull/2257

Full Changelog: https://github.com/jMonkeyEngine/jmonkeyengine/compare/v3.7.0-alpha3.1...v3.7.0-beta1