Fix bash references

Stay consistent with everything

install/log/after-install.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
 echo -e "\n--- Pacman packages (after installation) ---"
 echo "Total packages installed: $(pacman -Q | wc -l)"

install/log/before-install.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
 # Start logging a copy of everything sent to STDOUT and STDERR
 mkdir -p ~/.local/state/omarchy/logs/