[Bug] db log show FATAL: unsupported frontend protocol 1234.5680: server supports 2.0 to 3.0, when I try to connect with libpg 14.5

[SamirWell]

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[polardb-bot]

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[SamirWell]

[mrdrivingduck]

@SamirWell Seems that GSS encrypted connection is supported starting from PostgreSQL 12.