apacheGH-43158: [Packaging] Use bundled nlohmann/json on AlmaLinux 8/…

…CentOS Stream 8 (apache#43159)

### Rationale for this change

Because json-devel on them don't provide nlohmann/json_fwd.h that is required by google-cloud-cpp.

The upstream issue:
googleapis/google-cloud-cpp#14438

### What changes are included in this PR?

Use bundled nlohmann/json instead.

### Are these changes tested?

Yes.

### Are there any user-facing changes?

No.
* GitHub Issue: apache#43158

Authored-by: Sutou Kouhei <kou@clear-code.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>

dev/tasks/linux-packages/apache-arrow/yum/arrow.spec.in

@@ -63,6 +63,7 @@
 %define gcc_package gcc
 %endif
 
+%define use_bundled_nlohmann_json (%{_rhel} == 8)
 %define use_flight (%{_rhel} >= 8 || %{_amzn} >= 2023)
 %define use_gandiva (%{_rhel} >= 8 || %{_amzn} >= 2023)
 %define use_gcs (%{_rhel} >= 8)
@@ -117,7 +118,7 @@ BuildRequires:	glog-devel
 BuildRequires:	grpc-devel
 BuildRequires:	grpc-plugins
 %endif
-%if %{use_gcs}
+%if %{use_gcs} && !%{use_bundled_nlohmann_json}
 BuildRequires:	json-devel
 %endif
 BuildRequires:	libzstd-devel
@@ -194,6 +195,9 @@ cd cpp
   -DCMAKE_BUILD_TYPE=$cpp_build_type \
   -DPARQUET_BUILD_EXECUTABLES=ON \
   -DPARQUET_REQUIRE_ENCRYPTION=ON \
+%if %{use_bundled_nlohmann_json}
+  -Dnlohmann_json_SOURCE=BUNDLED \
+%endif
   -G"Unix Makefiles"
 %arrow_cmake_build
 cd -
@@ -280,7 +284,7 @@ Requires:	%{name}%{so_version}-libs = %{version}-%{release}
 Requires:	brotli-devel
 Requires:	bzip2-devel
 Requires:	curl-devel
-%if %{use_gcs}
+%if %{use_gcs} && !%{use_bundled_nlohmann_json}
 Requires:	json-devel
 %endif
 Requires:	libzstd-devel