chore: make bash script more portable (#5679)

frontend/scripts/linux_distribution/appimage/build_appimage.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 VERSION=$1
 

frontend/scripts/linux_distribution/deb/DEBIAN/postinst

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 if [ -e /usr/bin/AppFlowy ]; then
     echo "Symlink already exists, skipping."
 else

frontend/scripts/linux_distribution/deb/DEBIAN/postrm

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 if [ -e /usr/bin/AppFlowy ]; then
     rm /usr/bin/AppFlowy
     rm /usr/bin/AppFlowyLauncher.sh

frontend/scripts/linux_distribution/deb/build_deb.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 LINUX_RELEASE_PRODUCTION=$1
 VERSION=$2

frontend/scripts/linux_distribution/packaging/launcher.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 gdbus call --session --dest io.appflowy.AppFlowy \
     --object-path /io/appflowy/AppFlowy/Object \
     --method io.appflowy.AppFlowy.Open "['$1']" {}