Description:
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I maintain my own docker image and recently update for 7.2.9 to 11 then it fails to connect a MySQL8 server.

Found difference of loaded plugins of MySQLnd, see below, "auth_plugin_caching_sha2_password" is missing.

Test script:
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./configure --prefix=/usr --with-config-file-path=/usr/etc --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-iconv-dir=/usr/local --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-sysvsem --enable-sysvshm --enable-inline-optimization --with-curl=/usr --enable-mbregex --enable-fpm --enable-mbstring --with-gd --with-openssl --enable-pcntl --enable-sockets --with-xmlrpc --with-libzip --enable-soap --with-bz2 --with-gmp --with-gettext --with-readline --enable-sockets --enable-calendar --enable-opcache --with-sodium
(...build it)
php -i|grep "Loaded plugins"

Expected result:
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Loaded plugins => mysqlnd,debug_trace,auth_plugin_mysql_native_password,auth_plugin_mysql_clear_password,auth_plugin_caching_sha2_password,auth_plugin_sha256_password

Actual result:
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Loaded plugins => mysqlnd,debug_trace,auth_plugin_mysql_native_password,auth_plugin_mysql_clear_password,auth_plugin_sha256_password