meson: adjust nlohmann-json dependency

Simplify the meson dependency for nlohmann-json, use the consistent
dependency name, and align the wrap file name with other repositories.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I3a682a3e07e38d0a1bfe35858e24f1bb74b4ec34
diff --git a/test/meson.build b/test/meson.build
index 468f087..b4739d9 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -13,7 +13,7 @@
                      build_rpath: get_option('oe-sdk').allowed() ? rpath : '',
                      dependencies: [
                          libpldm_dep,
-                         nlohmann_json,
+                         nlohmann_json_dep,
                          gtest,
                          test_src]),
        workdir: meson.current_source_dir())