Ubuntu 22.04.3执行sudo apt update时出现NO_PUBKEY及不支持文件类型错误的解决求助

我在Ubuntu 22.04.3上执行sudo apt update命令时，总会遇到下面这些错误，有没有人知道该怎么解决呀？

W: https://dl.google.com/linux/chrome/deb/dists/stable/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/mysql.gpg are ignored as the file has an unsupported filetype.

W: http://security.ubuntu.com/ubuntu/dists/jammy-security/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/mysql.gpg are ignored as the file has an unsupported filetype.

W: http://id.archive.ubuntu.com/ubuntu/dists/jammy/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/mysql.gpg are ignored as the file has an unsupported filetype.

W: http://id.archive.ubuntu.com/ubuntu/dists/jammy-updates/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/mysql.gpg are ignored as the file has an unsupported filetype.

W: http://id.archive.ubuntu.com/ubuntu/dists/jammy-backports/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/mysql.gpg are ignored as the file has an unsupported filetype.

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://repo.mysql.com/apt/ubuntu jammy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B7B3B788A8D3785C

W: Failed to fetch http://repo.mysql.com/apt/ubuntu/dists/jammy/InRelease  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B7B3B788A8D3785C

W: Some index files failed to download. They have been ignored, or old ones used instead.

备注：内容来源于stack exchange，提问作者Muhammad Banar Wicaksono