Install libproc2-dev in Linux build environment

This ensures that the plugin will attempt to load either libprocps-dev
or libproc2-dev libraries at runtime, instead of just the libprocps-dev
library

Dep packages taken from:
 * https://packages.debian.org/bookworm/libproc2-0
 * https://packages.debian.org/bookworm/libproc2-dev

.github/scripts/.build-deps.zsh

@@ -456,7 +456,12 @@ Usage: %B${functrace[1]%:*}%b <option> [<options>]
         popd
       ;;
     linux)
-      # Nothing to do for now
+      # Hacky workaround to support libproc2 with Ubuntu 22 build environment
+      local lsb_version=$(lsb_release -r | cut -f 2 || true)
+      if [[ "${lsb_version}" == '22.04' ]] {
+        sudo apt install ${project_root}/build-aux/CI/linux/ubuntu22/libproc2-0_4.0.2-3_amd64.deb
+        sudo apt install ${project_root}/build-aux/CI/linux/ubuntu22/libproc2-dev_4.0.2-3_amd64.deb
+      }
       ;;
   }
 }