ci: install git-core

It has less dependencies than the "full" git package.

On Fedora, we need --setopt=install_weak_deps=false so that the "full"
git package is not installed.

Also, setup nodocs transaction flag as we don't need documentation
inside CI environment. This might save some time and/or disk space.

Before:

> Install  77 Packages
> Total download size: 164 M
> Installed size: 431 M

After:

> Install  30 Packages
> Total download size: 148 M
> Installed size: 381 M

(Those numbers are for almalinux-8).

Signed-off-by: Kir Kolyshkin <[email protected]>

Author: kolyshkin

.github/workflows/validate.yml

@@ -124,7 +124,7 @@ jobs:
           # Sync the current directory to /tmp/selinux in the guest
           limactl cp -r . default:/tmp/selinux
           # Install packages
-          lima sudo dnf install -y git make golang
+          lima sudo dnf install --setopt=install_weak_deps=false --setopt=tsflags=nodocs -y git-core make golang
 
       - name: "make test"
         run: lima make -C /tmp/selinux test