Make shebang more portable to NixOS

polybar/scripts/dunst-notification-status.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Check if dunst is running
 if pgrep -x "dunst" > /dev/null
 then

polybar/scripts/get-media-playing.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 mediaStatus=$(playerctl --player=playerctld metadata 2>&1)
 
 if [[ "$mediaStatus" == "No player could handle this command" ]]; then

polybar/scripts/updates-pacman-aurhelper.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 if ! updates_arch=$(checkupdates 2> /dev/null | wc -l ); then
     updates_arch=0
 fi