Update README.md

Author: java-embedded-framework

README.md

@@ -73,7 +73,7 @@ Please see details [here](PLATFORMS.md)
 System requirements
 ===================
 * Linux kernel 4.8+ for core level (or Raspberry Pi OS/Armbian for mcu level)
-* Java 1.8+
+* Java 11+
 * Maven 3+
 
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