Fix crash for large JWT timestamp values

[PartyManCZ]

If the JWT Token had an absurdly large timestamp the program would crash with:

Traceback (most recent call last): File "/home/kali/jwt_tool/jwt_tool.py", line 2152, in <module> rejigToken(headDict, paylDict, sig) ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/kali/jwt_tool/jwt_tool.py", line 1318, in rejigToken comparestamps, expiredtoken = dissectPayl(paylDict) ~~~~~~~~~~~^^^^^^^^^^ File "/home/kali/jwt_tool/jwt_tool.py", line 1212, in dissectPayl timestamp = datetime.fromtimestamp(int(paylDict[claim])) ValueError: year 57734 is out of range

This PR fixes that by not processing it and instead printing an out of range string like this:
[+] exp = 1759759297963 ==> TIMESTAMP = (timestamp 1759759297963 out of range)

• Added a timezone parameter when translating into a human-readable time