[gnome-remote-desktop] tests: Use bash from environment instead of hardcoded path

[Jonas Ådahl <jadahl src gnome org>]

commit 73d778b38a72495a07a43634574d33255098506c
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Mon May 31 16:29:29 2021 +0200

    tests: Use bash from environment instead of hardcoded path
    
    In various systems (such as debian based distros) bash is still in
    /bin/bash, so just use env to figure out its path.

 tests/vnc-test-runner.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tests/vnc-test-runner.sh b/tests/vnc-test-runner.sh
index a699e74..aa973d2 100755
--- a/tests/vnc-test-runner.sh
+++ b/tests/vnc-test-runner.sh
@@ -1,3 +1,3 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 dbus-run-session -- xvfb-run -s '+iglx -noreset' $TEST_SRCDIR/tests/run-vnc-tests.py