Packages:
$ dpkg -l | grep libssl
ii  libssl-dev:amd64                                      3.0.2-0ubuntu1.5                        amd64        Secure Sockets Layer toolkit - development files
rc  libssl1.0.0:amd64                                     1.0.2n-1ubuntu5.9                       amd64        Secure Sockets Layer toolkit - shared libraries
ii  libssl1.1:amd64                                       1.1.1f-1ubuntu2.13                      amd64        Secure Sockets Layer toolkit - shared libraries
ii  libssl3:amd64                                         3.0.2-0ubuntu1.5                        amd64        Secure Sockets Layer toolkit - shared libraries
ii  libssl3:i386                                          3.0.2-0ubuntu1.5                        i386         Secure Sockets Layer toolkit - shared libraries

$ dpkg -l | grep pkg-config
ii  librust-pkg-config-dev:amd64                          0.3.21-1                                amd64        Run the pkg-config system tool at build time in order to be used in Cargo build scripts - Rust source code
ii  pkg-config                                            0.29.2-1ubuntu3                         amd64        manage compile and link flags for libraries