Update googletest to 1.18.0 and SIMDe to 0.8.2.

Googletest 1.18 asks for CMake 3.13 or newer, so configuring the tests no longer warns that CMake compatibility below 3.10 is deprecated.

Co-authored-by: Cursor <cursoragent@cursor.com>

thirdparty/simde/.cirrus.yml

@@ -5,8 +5,8 @@ task:
   name: Sanitizers
   skip: $BRANCH == "master" || ($BRANCH != 'ci/cirrus' && $BRANCH =~ '^ci/.+')
   env:
-    CC: clang
-    CXX: clang++
+    CC: clang-17
+    CXX: clang++-17
     CFLAGS: -Wextra -Werror -march=native
     CXXFLAGS: -Wextra -Werror -march=native
   system_info_script:
@@ -14,10 +14,10 @@ task:
   - cat /proc/meminfo
   install_dependencies_script:
     - apt-get update
-    - apt-get install -y ninja-build ninja-build python3-pip python3-setuptools python3-wheel gcovr clang
-    - pip3 install meson==0.55.0
+    - apt-get install -y ninja-build ninja-build pipx python3-setuptools python3-wheel gcovr clang-17
+    - pipx install meson==0.55.0
   configure_script:
-    - /usr/local/bin/meson setup build -Db_coverage=true -Db_sanitize=address,undefined -Db_lundef=false
+    - /root/.local/bin/meson setup build -Db_coverage=true -Db_sanitize=address,undefined -Db_lundef=false
   build_script:
     - ninja -C build -v -j 3
   test_script: