Revert "openexr_3: 3.2.4 -> 3.3.0"

This reverts commit 6f7657be4c.

Causes a libjxl test to fail.  Bisected to openexr commit
e4e6cf2 ("Initial conversion of input file to use core"), which
doesn't look like an intentional behavior change, so let's revert this
until that's figured out.  I've reported it to libjxl, and will report
it to openexr once they confirm it's not a problem on their end.

Link: https://github.com/libjxl/libjxl/issues/3901

pkgs/development/libraries/openexr/3.nix

@@ -10,13 +10,13 @@
 
 stdenv.mkDerivation rec {
   pname = "openexr";
-  version = "3.3.0";
+  version = "3.2.4";
 
   src = fetchFromGitHub {
     owner = "AcademySoftwareFoundation";
     repo = "openexr";
     rev = "v${version}";
-    hash = "sha256-/B0IMbPnixLR10KrE2n9n2Ny/pLIsG6DpBJn8Ax79oE=";
+    hash = "sha256-mVUxxYe6teiJ18PQ9703/kjBpJ9+a7vcDme+NwtQQQM=";
   };
 
   outputs = [ "bin" "dev" "out" "doc" ];