test: change "#!/bin/bash" to "#!/usr/bin/env bash" enhances portability

Change #!/bin/bash at start of tests to "#!/usr/bin/env bash". That way
systems running on bash < 4 can prepend bash >= 4 to path before
running the tests.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/new b/test/new
index 7b396ae4..1b7296e8 100755
--- a/test/new
+++ b/test/new
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 test_description='"notmuch new" in several variations'
 . ./test-lib.sh