Change case of oniguruma in package_deps

Oniguruma exports cmake config file with name "oniguruma", so
"Oniguruma" will work only on case insensitive file systems.

Co-authored-by: Krzysztof Pszeniczny <krzysztof.pszeniczny@gmail.com>

CMakeLists.txt

@@ -83,7 +83,7 @@ if(NOT EVHTP_DISABLE_REGEX)
     if(ONIGURUMA_FOUND)
         list(APPEND LIBEVHTP_EXTERNAL_LIBS ${ONIGURUMA_LIBRARIES})
         list(APPEND LIBEVHTP_EXTERNAL_INCLUDES ${ONIGURUMA_INCLUDE_DIRS})
-        list(APPEND package_deps Oniguruma)
+        list(APPEND package_deps oniguruma)
     else()
         message(STATUS "${BoldRed}${CMAKE_BUILD_TYPE}ONIGURUMA NOT FOUND, DISABLING REGEX SUPPORT${ColourReset}")
         set(EVHTP_DISABLE_REGEX ON)