OpenJPEG seems to include its version number in its include directory.
As of this writing, OpenJPEG is at 2.4.
However, add later versions for future use.

--- src/cmake/modules/FindOpenJpeg.cmake.orig	2020-07-01 11:06:00.000000000 -0700
+++ src/cmake/modules/FindOpenJpeg.cmake	2021-04-18 07:39:07.000000000 -0700
@@ -90,6 +90,12 @@
        ${OpenJpeg_library_paths}
       )
   set (OpenJpeg_include_paths
+       ${OpenJpeg_ROOT}/include/openjpeg-2.9
+       ${OpenJpeg_ROOT}/include/openjpeg-2.8
+       ${OpenJpeg_ROOT}/include/openjpeg-2.7
+       ${OpenJpeg_ROOT}/include/openjpeg-2.6
+       ${OpenJpeg_ROOT}/include/openjpeg-2.5
+       ${OpenJpeg_ROOT}/include/openjpeg-2.4
        ${OpenJpeg_ROOT}/include/openjpeg-2.3
        ${OpenJpeg_ROOT}/include/openjpeg-2.2
        ${OpenJpeg_ROOT}/include/openjpeg-2.1