buildroot: Add perl-core

[Jakob-Naucke]

as done in trusted-execution-clusters/buildroot#9. Also remove redundant installations and update version comments.

[uril]

Packages cargo, gcc, make, pkgconfig (pkgconf-pkg-config) are installed with rust-toolset
Package perl-FindBin is installed with perl-core.
Packages gcc-c++, git, openssl-devel are not installed -- are they not used (especially openssl-devel) ?

[Jakob-Naucke]

Packages gcc-c++, git, openssl-devel are not installed -- are they not used (especially openssl-devel) ?

They come with go-toolset:

$ podman run -it --rm registry.access.redhat.com/ubi9/go-toolset dnf list gcc-c++ git openssl-devel make    
Not root, Subscription Management repositories not updated
Red Hat Universal Base Image 9 (RPMs) - BaseOS                            941 kB/s | 534 kB     00:00    
Red Hat Universal Base Image 9 (RPMs) - AppStream                         4.2 MB/s | 2.8 MB     00:00    
Red Hat Universal Base Image 9 (RPMs) - CodeReady Builder                 926 kB/s | 471 kB     00:00    
Installed Packages
gcc-c++.x86_64                         11.5.0-14.el9                     @rhel-9-for-x86_64-appstream-rpms
git.x86_64                             2.52.0-1.el9                      @rhel-9-for-x86_64-appstream-rpms
make.x86_64                            1:4.3-8.el9                       @rhel-9-for-x86_64-baseos-rpms   
openssl-devel.x86_64                   1:3.5.5-6.el9_8                   @rhel-9-for-x86_64-appstream-rpms
Available Packages
openssl-devel.i686                     1:3.5.5-6.el9_8                   ubi-9-appstream-rpms

[uril]

Looks good to me.