Update Catch2 version to v2.13.10

[JWhitleyAion]

In Ubuntu 24.04, the currently-checked-out version of Catch2 throws a build error. Updating to the latest v2 version fixes this issue. Build failure:

[ 50%] Building CXX object test/CMakeFiles/testcerberus.dir/testcerberus.cc.o
In file included from /usr/include/signal.h:328,
                 from /workspace/packages/cerberus-cpp/cerberus-cpp-build/ext/Catch2/single_include/catch2/catch.hpp:8034,
                 from /workspace/packages/cerberus-cpp/cerberus-cpp-build/test/testcerberus.cc:2:
/workspace/packages/cerberus-cpp/cerberus-cpp-build/ext/Catch2/single_include/catch2/catch.hpp:10822:58: error: call to non-'constexpr' function 'long int sysconf(int)'
10822 |     static constexpr std::size_t sigStackSize = 32768 >= MINSIGSTKSZ ? 32768 : MINSIGSTKSZ;
      |                                                          ^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/bits/sigstksz.h:24:
/usr/include/unistd.h:640:17: note: 'long int sysconf(int)' declared here
  640 | extern long int sysconf (int __name) __THROW;
      |                 ^~~~~~~
/workspace/packages/cerberus-cpp/cerberus-cpp-build/ext/Catch2/single_include/catch2/catch.hpp:10881:45: error: size of array 'altStackMem' is not an integral constant-expression
10881 |     char FatalConditionHandler::altStackMem[sigStackSize] = {};
      |                                             ^~~~~~~~~~~~
make[2]: *** [test/CMakeFiles/testcerberus.dir/build.make:76: test/CMakeFiles/testcerberus.dir/testcerberus.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:1125: test/CMakeFiles/testcerberus.dir/all] Error 2
make: *** [Makefile:146: all] Error 2

Error building package. Exiting.

Exited with code exit status 1