[compiler-rt] Use portable "#!/usr/bin/env bash" shebang for tests.

In build_symbolizer.sh we can safely remove the -eu argument from the shebang (which is an unportable construct), as the scripts sets **-e** and **-u** already.

Differential Revision: https://reviews.llvm.org/D110039

GitOrigin-RevId: 626e2a6c6236d2fd7582928a0363d381c55eb43d
Change-Id: I41ffb95dde1089ba816ed68a8d26213dae01e93b
diff --git a/gwp_asan/scripts/symbolize.sh b/gwp_asan/scripts/symbolize.sh
index 6974ee8..0027fa0 100755
--- a/gwp_asan/scripts/symbolize.sh
+++ b/gwp_asan/scripts/symbolize.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # The lines that we're looking to symbolize look like this:
   #0 ./a.out(_foo+0x3e6) [0x55a52e64c696]