Fix shebang on several scripts

.config/polybar/scripts/custom_date

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 date=$(date "+%H:%M | %d de %B")
 hour_minute=$(echo "$date" | cut -f 1 -d"|")

.config/polybar/scripts/polywins

@@ -1,5 +1,4 @@
-#!/bin/sh
-# POLYWINS
+#!/usr/bin/env bash
 
 # Forked from: https://github.com/tam-carre/polywins
 

.config/polybar/scripts/switch_window_state

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e