Update API version to 2.2.0 (#3547)
Update API version to 2.2.0 (#3547)

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu
jerryscript-project/jerryscript,akosthekiss/jerryscript,dbatyai/jerryscript,jerryscript-project/jerryscript,dbatyai/jerryscript,zherczeg/jerryscript,akosthekiss/jerryscript,robertsipka/jerryscript,zherczeg/jerryscript,robertsipka/jerryscript,bzsolt/jerryscript,bzsolt/jerryscript,zherczeg/jerryscript,dbatyai/jerryscript,robertsipka/jerryscript,zherczeg/jerryscript,jerryscript-project/jerryscript,dbatyai/jerryscript,bzsolt/jerryscript,bzsolt/jerryscript,jerryscript-project/jerryscript,bzsolt/jerryscript,robertsipka/jerryscript,akosthekiss/jerryscript,dbatyai/jerryscript,robertsipka/jerryscript,jerryscript-project/jerryscript,zherczeg/jerryscript,akosthekiss/jerryscript,robertsipka/jerryscript,akosthekiss/jerryscript