Victor Barpp Gomes

`x509_info_subject_alt_name`: Render HardwareModuleName as hex

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## Description Change `x509_info_subject_alt_name` to render the serial numbers in HardwareModuleName SAN extensions (RFC 4108) in hex encoding. Fixes #6262. More details about the reason of this change in the...

`mbedtls_x509_crt_info` produces non-printable output for binary HardwareModuleName SAN extensions

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### Summary `mbedtls_x509_crt_info` produces non-printable characters if the certificate contains an RFC 4108 HardwareModuleName (as a Subject Alternative Name extension) whose hwSerialNum has non-printable bytes. This happens because [the code](https://github.com/Mbed-TLS/mbedtls/blob/52f83dc471625f503a335ccef4f4b484a2a579ef/library/x509_crt.c#L1915)...