Fix zlib dependency for Regres

VK-GL-CTS has updated the zlib dependency, because the previous one
no longer exists. This causes Regres to fail to fetch the proper
version of zlib and exit early. This updates the hash to the current
ToT, where the only difference from the previous version we were
using is the zlib version fix, so there should be no test updates.

Bug: b/201453797
Change-Id: I50857e3ca70203e383d1c0d4ed5b98b2d0958e60
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/69148
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Presubmit-Ready: Alexis Hétu <sugoi@google.com>
Tested-by: Alexis Hétu <sugoi@google.com>
Commit-Queue: Alexis Hétu <sugoi@google.com>

tests/regres/deqp.json

diff --git a/tests/regres/deqp.json b/tests/regres/deqp.json
index beea2be..1259c57 100644
--- a/tests/regres/deqp.json
+++ b/tests/regres/deqp.json
@@ -1,7 +1,7 @@
 {
     "remote": "https://github.com/KhronosGroup/VK-GL-CTS.git",
     "branch": "",
-    "sha": "f4ed7376e1da2e720211bcddd605bc0599e91920",
+    "sha": "7aaf3aef809de09834ff355f38917d8a16830ec8",
     "patches": [
         "tests/regres/deqp-patches/deqp-x11.patch",
         "tests/regres/deqp-patches/deqp-oob-read-fix.patch",