Update Google Benchmark to 1.10.0 (#5823)

* Update Google Benchmark to 1.10.0

Bump the pinned release and its archive checksum. Reword the comment and
README: the version is fixed for reproducible builds and updated like any
other dependency; results stay comparable because both sides of a
comparison are built with the same version.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Do not name the Google Benchmark version in the README

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

tests/benchmarks/CMakeLists.txt

@@ -6,8 +6,9 @@ if((CMAKE_CXX_COMPILER_ID MATCHES GNU) OR (CMAKE_CXX_COMPILER_ID MATCHES Clang))
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto -DNDEBUG -O3")
 endif()
 
-# configure Google Benchmark; a fixed release, so that results stay comparable
-set(JSON_GOOGLE_BENCHMARK_VERSION 1.9.5)
+# configure Google Benchmark; a fixed release with a checksum, so that builds are reproducible. Update it like any
+# other dependency; comparisons stay fair because both sides are built with the same version (see README.md)
+set(JSON_GOOGLE_BENCHMARK_VERSION 1.10.0)
 include(FetchContent)
 
 # only the library is needed; -Werror would break the pinned release as soon as
@@ -18,7 +19,7 @@ set(BENCHMARK_ENABLE_WERROR OFF CACHE BOOL "" FORCE)
 
 FetchContent_Declare(benchmark
     URL https://github.com/google/benchmark/archive/refs/tags/v${JSON_GOOGLE_BENCHMARK_VERSION}.tar.gz
-    URL_HASH SHA256=9631341c82bac4a288bef951f8b26b41f69021794184ece969f8473977eaa340
+    URL_HASH SHA256=acc5c7c0fbed855c4aaa2d7c3c36fb82b0c15c28f4e151e3f679c2fc0aa404af
     DOWNLOAD_EXTRACT_TIMESTAMP TRUE
 )
 FetchContent_MakeAvailable(benchmark)