Update BR for OpenEXR.

kio-extras.spec

@@ -63,7 +63,12 @@ BuildRequires:  libjpeg-devel
 BuildRequires:  libmtp-devel
 BuildRequires:  libsmbclient-devel
 BuildRequires:  libssh-devel
+%if 0%{?fedora} > 33
+# As of 2.5.x openexr is cmake based.
+BuildRequires:  cmake(OpenEXR)
+%else
 BuildRequires:  OpenEXR-devel
+%endif
 BuildRequires:  openslp-devel
 BuildRequires:  perl-generators
 BuildRequires:  phonon-qt5-devel