tests/no-new-dependencies: Add /bin/sh to requires.txt

There appears to be new rpm behavior which adds

Requires(interp): /bin/sh

to this package, so we need to account for this in requires.txt.
We already have /usr/bin/sh in requires.txt, so this is not a
new dependency.

tests/no-new-dependency/requires.txt

@@ -2,6 +2,7 @@ coreutils
 dwz
 rpm
 zip
+/bin/sh
 /usr/bin/bash
 /usr/bin/file
 /usr/bin/find