Bump external/termux-elf-cleaner from ee5385e to 3da3eea

[dependabot]

Bumps external/termux-elf-cleaner from ee5385e to 3da3eea.

This bump required accompanying updates to tools/fastdev/elfcleaner/CMakeLists.txt to stay in sync with upstream changes:

• Updated the source path from termux-elf-cleaner.cpp to elf-cleaner.cpp (file renamed upstream).
• Bumped the C++ standard from C++17 to C++20 (the source now uses std::counting_semaphore).
• Added the PACKAGE_NAME, PACKAGE_VERSION, and COPYRIGHT compile definitions now required by the source, with the version extracted into an ELFCLEANER_VERSION variable.

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[jonathanpeppers]

@copilot can you fix:

         CMake Error at CMakeLists.txt:32 (add_executable):
           Cannot find source file:
         
             ../../../external/termux-elf-cleaner/termux-elf-cleaner.cpp
         
           Tried extensions .c .C .c++ .cc .cpp .cxx .cu .mpp .m .M .mm .ixx .cppm
           .ccm .cxxm .c++m .h .hh .h++ .hm .hpp .hxx .in .txx .f .F .for .f77 .f90
           .f95 .f03 .hip .ispc
         
         
         CMake Error at CMakeLists.txt:32 (add_executable):
           No SOURCES given to target: elfcleaner

[Copilot]

@copilot can you fix:

         CMake Error at CMakeLists.txt:32 (add_executable):

...

Fixed in 482571e (and follow-ups). The upstream submodule renamed termux-elf-cleaner.cpp → elf-cleaner.cpp, so I updated the source path in tools/fastdev/elfcleaner/CMakeLists.txt. The new source also requires C++20 (std::counting_semaphore) and the PACKAGE_NAME/PACKAGE_VERSION/COPYRIGHT compile definitions, which I added. Verified elfcleaner now configures, builds, and runs (--version reports termux-elf-cleaner 3.0.1).