Revert "ilmbase: update to 2.5.2"

This reverts commit 9cf76a65ec.

srcpkgs/ilmbase/template

@@ -1,7 +1,8 @@
 # Template file for 'ilmbase'
 pkgname=ilmbase
-version=2.5.2
-revision=1
+reverts="2.5.2_1"
+version=2.4.2
+revision=2
 wrksrc="openexr-${version}"
 build_wrksrc=IlmBase
 build_style=cmake
@@ -11,7 +12,7 @@ maintainer="skmpz <dem.procopiou@gmail.com>"
 license="BSD-3-Clause"
 homepage="https://www.openexr.com/"
 distfiles="https://github.com/openexr/openexr/archive/v${version}.tar.gz>${pkgname}-${version}.tar.gz"
-checksum=5da8dff448d0c4a529e52c97daf238a461d01cd233944f75095668d6d7528761
+checksum=8e5bfd89f4ae1221f84216a163003edddf0d37b8aac4ee42b46edb55544599b9
 
 pre_configure() {
 	if [ "$CROSS_BUILD" ]; then