s2n_session_ticket_test test fails on 32-bit systems (i586)

[glaubitz]

The test s2n_session_ticket_test fails on 32-bit systems such as i586 with:

[  274s] 141/180 Test #139: s2n_session_ticket_test ..........................***Failed   22.52 sec
[  274s] NOTE: Some details are omitted, run with S2N_PRINT_STACKTRACE=1 for a verbose backtrace.
[  274s] See https://github.com/awslabs/s2n/blob/main/docs/USAGE-GUIDE.md
[  274s] FAILED test 96
[  274s] !(((s2n_negotiate_test_server_and_client(server_conn, client_conn))) == (-1)) is not true  (../tests/unit/s2n_session_ticket_test.c line 295)
[  274s] Error Message: 'Certificate is untrusted'
[  274s]  Debug String: 'Error encountered in ../tls/s2n_x509_validator.c line 355'
[  274s]  System Error: Success (0)
[  274s] Running ../tests/unit/s2n_session_ticket_test.c            ...

[dougch]

Recent example of this passing.

Related to #3977