Update RELEASES.md

RELEASES.md

 # UEABS Releases
 
+## Version 2.2 (PRACE-6IP, December 31, 2021)
+* Changed the presentation, making it similar to the CORAL Benchmarks (cf. <a href="https://asc.llnl.gov/coral-benchmarks">CORAL Benchmarks</a> and <a href="https://asc.llnl.gov/coral-2-benchmarks">CORAL-2 Benchmarks</a>)
+* Removed the SHOC benchmark suite
+* Added the TensorFlow benchmark
+* Alya ...
+* ...
+* ...
+* TensorFlow ...
+* Updated the benchmark suite to the status as used for the PRACE-5IP benchmarking deliverable D7.5 "Evaluation of Benchmark Performance" (November 30, 2021)
+
 ## Version 2.1 (PRACE-5IP, April 30, 2019)
 
  * Updated the benchmark suite to the status as used for the PRACE-5IP benchmarking deliverable D7.5 "Evaluation of Accelerated and Non-accelerated Benchmarks" (April 18, 2019)