How can suppress the warning info when to verify apache?

Warning info "This key is not certified with a trusted signature!" when to verify apache : wget https://downloads.apache.org/accumulo/1.10.2/accumulo-1.10.2-bin.tar.gz wget https://downloads.apache.org/accumulo/1.10.2/accumulo-1.10.2-bin.tar.gz.asc wget https://downloads.apache.org/accumulo/KEYS gpg --import KEYS gpg --verify accumulo-1.10.2-bin.tar.gz.asc accumulo-1.10.2-bin.tar.gz An error info occurs: gpg: Signature made Tue 08 Feb 2022 11:04:00 PM HKT gpg: using RSA key 8CC4F8A2B29C2B040F2B835D6F0CDAE700B6899D gpg: Good signature from "Christopher L Tubbs II (Christopher) " [unknown] gpg: aka "Christopher L Tubbs II (Developer) " [unknown] gpg: aka "Christopher L Tubbs II (Developer) " [unknown] gpg: WARNING: This key is not certified with a trusted signature! gpg: There is no indication that the signature belongs to the owner. Primary key fingerprint: 8CC4 F8A2 B29C 2B04 0F2B 835D 6F0C DAE7 00B6 899D I want to trust it fully: gpg --edit-key 8CC4F8A2B29C2B040F2B835D6F0CDAE700B6899D gpg (GnuPG) 2.2.27; Copyright (C) 2021 Free Software Foundation, Inc. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. pub rsa4096/6F0CDAE700B6899D created: 2012-10-13 expires: 2024-01-12 usage: SC trust: full validity: unknown sub rsa4096/2FFC0085C23D3DA9 created: 2012-10-13 expires: 2024-01-12 usage: E sub rsa4096/4417A0C14245D003 created: 2013-04-28 expires: 2024-01-12 usage: A [ unknown] (1). Christopher L Tubbs II (Christopher) [ unknown] (2) Christopher L Tubbs II (Developer) [ unknown] (3) Christopher L Tubbs II (Developer) gpg> trust pub rsa4096/6F0CDAE700B6899D created: 2012-10-13 expires: 2024-01-12 usage: SC trust: full validity: unknown sub rsa4096/2FFC0085C23D3DA9 created: 2012-10-13 expires: 2024-01-12 usage: E sub rsa4096/4417A0C14245D003 created: 2013-04-28 expires: 2024-01-12 usage: A [ unknown] (1). Christopher L Tubbs II (Christopher) [ unknown] (2) Christopher L Tubbs II (Developer) [ unknown] (3) Christopher L Tubbs II (Developer) Please decide how far you trust this user to correctly verify other users' keys (by looking at passports, checking fingerprints from different sources, etc.) 1 = I don't know or won't say 2 = I do NOT trust 3 = I trust marginally 4 = I trust fully 5 = I trust ultimately m = back to the main menu Your decision? 4 pub rsa4096/6F0CDAE700B6899D created: 2012-10-13 expires: 2024-01-12 usage: SC trust: full validity: unknown sub rsa4096/2FFC0085C23D3DA9 created: 2012-10-13 expires: 2024-01-12 usage: E sub rsa4096/4417A0C14245D003 created: 2013-04-28 expires: 2024-01-12 usage: A [ unknown] (1). Christopher L Tubbs II (Christopher) [ unknown] (2) Christopher L Tubbs II (Developer) [ unknown] (3) Christopher L Tubbs II (Developer) gpg> quit Then to verify again: gpg --verify accumulo-1.10.2-bin.tar.gz.asc accumulo-1.10.2-bin.tar.gz gpg: Signature made Tue 08 Feb 2022 11:04:00 PM HKT gpg: using RSA key 8CC4F8A2B29C2B040F2B835D6F0CDAE700B6899D gpg: Good signature from "Christopher L Tubbs II (Christopher) " [unknown] gpg: aka "Christopher L Tubbs II (Developer) " [unknown] gpg: aka "Christopher L Tubbs II (Developer) " [unknown] gpg: WARNING: This key is not certified with a trusted signature! gpg: There is no indication that the signature belongs to the owner. Primary key fingerprint: 8CC4 F8A2 B29C 2B04 0F2B 835D 6F0C DAE7 00B6 899D How can suppress the warning info when to verify apache ?