Check Fingerprint value syntax

[ibc]

Currently mediasoup generates Fingerprint values in hexadecimal uppercase:

SHA-1   fingerprint: 11:BB:5F:BE:48:18:5A:6C:87:D2:55:5F:4D:88:3A:DB:25:84:50:6E +0ms
SHA-224 fingerprint: 87:06:5A:7E:9E:92:2A:F2:29:62:66:01:E2:BA:E1:5A:69:D8:DC:A8:F6:5B:8E:42:A3:17:ED:5B +0ms
SHA-256 fingerprint: B0:9E:7C:B9:9C:B8:79:BB:CC:9A:3C:C5:8C:06:73:D2:D8:F0:92:99:7A:D0:BA:3C:1A:09:FF:18:9D:ED:7F:D4 +0ms
SHA-384 fingerprint: E1:47:23:6A:C3:E5:F2:94:1E:E7:30:F2:9B:7E:F7:5C:A4:57:57:33:22:E9:56:02:0B:BB:15:D4:77:1D:A2:A9:2E:E7:DA:49:22:0E:99:65:5E:38:CD:8C:37:96:CC:34 +0ms
SHA-512 fingerprint: 26:14:BD:0E:4B:1B:BD:75:6D:FF:67:70:96:03:44:A3:1A:50:24:07:30:8B:A5:51:08:7A:6D:26:E3:EE:8D:51:11:CF:6E:BC:DC:A4:20:6A:07:BB:C8:4C:87:8C:75:AC:03:5D:67:A2:39:8B:19:91:F0:88:CB:74:AC:DE:E8:FF

However that is just the "SDP" syntax described by RFC 4572. As commented in ORTC there is no real reason for that:

w3c/ortc#315