[CI][Docs] Docs preview jobs failing when building C++

[AlenkaF]

Describe the bug, including details regarding any error messages, version, and platform.

The crossbow docs preview jobs have started failing when building C++ with this message:

[248/1375] Building CXX object _deps/opentelemetry_cpp-build/CMakeFiles/opentelemetry_proto.dir/Unity/unity_0_cxx.cxx.o
FAILED: _deps/opentelemetry_cpp-build/CMakeFiles/opentelemetry_proto.dir/Unity/unity_0_cxx.cxx.o 
/usr/bin/ccache /usr/lib/ccache/c++ -DARROW_HAVE_RUNTIME_AVX2 -DARROW_HAVE_RUNTIME_AVX512 -DARROW_HAVE_RUNTIME_BMI2 -DARROW_HAVE_RUNTIME_SSE4_2 -DARROW_HAVE_SSE4_2 -DARROW_WITH_TIMING_TESTS -I/build/cpp/generated/third_party/opentelemetry-proto -Wredundant-move -Wno-noexcept-type -Wno-subobject-linkage  -fdiagnostics-color=always  -Wall -Wno-conversion -Wno-sign-conversion -Wdate-time -Wimplicit-fallthrough -Wunused-result -fno-semantic-interposition -msse4.2  -g -Werror -O0 -ggdb -g1 -Wno-error -fPIC -Wno-error=deprecated-declarations -Wno-type-limits -Wno-deprecated-declarations -Wno-unused-parameter -std=c++20 -MD -MT _deps/opentelemetry_cpp-build/CMakeFiles/opentelemetry_proto.dir/Unity/unity_0_cxx.cxx.o -MF _deps/opentelemetry_cpp-build/CMakeFiles/opentelemetry_proto.dir/Unity/unity_0_cxx.cxx.o.d -o _deps/opentelemetry_cpp-build/CMakeFiles/opentelemetry_proto.dir/Unity/unity_0_cxx.cxx.o -c /build/cpp/_deps/opentelemetry_cpp-build/CMakeFiles/opentelemetry_proto.dir/Unity/unity_0_cxx.cxx
In file included from /build/cpp/_deps/opentelemetry_cpp-build/CMakeFiles/opentelemetry_proto.dir/Unity/unity_0_cxx.cxx:5:

See: https://github.com/ursacomputing/crossbow/actions/runs/20767435007/job/59636454354#step:6:7337

Component(s)

Continuous Integration, Documentation

[kou]

This may be a duplicated issue of #48750.