ci: Enable FindICU test on Linux builds

.gitlab/ci/configure_debian10_aarch64_ninja.cmake

@@ -26,6 +26,7 @@ set(CMake_TEST_FindGSL "ON" CACHE BOOL "")
 set(CMake_TEST_FindGTest "ON" CACHE BOOL "")
 set(CMake_TEST_FindGTK2 "ON" CACHE BOOL "")
 set(CMake_TEST_FindIconv "ON" CACHE BOOL "")
+set(CMake_TEST_FindICU "ON" CACHE BOOL "")
 set(CMake_TEST_FindIntl "ON" CACHE BOOL "")
 set(CMake_TEST_FindJNI "ON" CACHE BOOL "")
 set(CMake_TEST_FindJPEG "ON" CACHE BOOL "")

.gitlab/ci/configure_debian10_ninja.cmake

@@ -30,6 +30,7 @@ set(CMake_TEST_FindGSL "ON" CACHE BOOL "")
 set(CMake_TEST_FindGTest "ON" CACHE BOOL "")
 set(CMake_TEST_FindGTK2 "ON" CACHE BOOL "")
 set(CMake_TEST_FindIconv "ON" CACHE BOOL "")
+set(CMake_TEST_FindICU "ON" CACHE BOOL "")
 set(CMake_TEST_FindIntl "ON" CACHE BOOL "")
 set(CMake_TEST_FindJNI "ON" CACHE BOOL "")
 set(CMake_TEST_FindJPEG "ON" CACHE BOOL "")

.gitlab/ci/configure_fedora35_makefiles.cmake

@@ -29,6 +29,7 @@ set(CMake_TEST_FindGSL "ON" CACHE BOOL "")
 set(CMake_TEST_FindGTest "ON" CACHE BOOL "")
 set(CMake_TEST_FindGTK2 "ON" CACHE BOOL "")
 set(CMake_TEST_FindIconv "ON" CACHE BOOL "")
+set(CMake_TEST_FindICU "ON" CACHE BOOL "")
 set(CMake_TEST_FindIntl "ON" CACHE BOOL "")
 set(CMake_TEST_FindJNI "ON" CACHE BOOL "")
 set(CMake_TEST_FindJPEG "ON" CACHE BOOL "")