fix: use more generic shell script shebang

scripts/session/session-bios.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/sh
+#!/usr/bin/env sh
 #
 # name: Enter BIOS
 # icon: system-restart

scripts/session/session-lock.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/sh
+#!/usr/bin/env sh
 #
 # name: Lock
 # icon: locked

scripts/session/session-logout.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/sh
+#!/usr/bin/env sh
 #
 # name: Log Out
 # icon: system-log-out

scripts/session/session-reboot.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/sh
+#!/usr/bin/env sh
 #
 # name: Restart
 # icon: system-restart

scripts/session/session-shutdown.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/sh
+#!/usr/bin/env sh
 #
 # name: Power off
 # icon: system-shutdown

scripts/session/session-suspend.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/sh
+#!/usr/bin/env sh
 #
 # name: Suspend
 # icon: system-suspend

scripts/system76-power/graphics-compute.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 #
 # name: Switch to Compute Graphics
 # icon: preferences-system-symbolic

scripts/system76-power/graphics-discrete.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 #
 # name: Switch to NVIDIA Graphics
 # icon: preferences-system-symbolic

scripts/system76-power/graphics-hybrid.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 #
 # name: Switch to Hybrid Graphics
 # icon: preferences-system-symbolic

scripts/system76-power/graphics-integrated.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 #
 # name: Switch to Integrated Graphics
 # icon: preferences-system-symbolic