Forgot to replace one line v14 -> 15

Dockerfile-ubuntu2204

@@ -46,7 +46,7 @@ RUN sudo apt-get update && \
 RUN /emsdk/upstream/emscripten/em++ -s WASM=1 -s USE_SDL=2 -s USE_SDL_TTF=2 -O3 /dev/null || true
 
 # Fix some weird linker issue CAF build runs into. (fails to link -lc++abi)
-RUN cp -prv /usr/lib/llvm-14/lib/libc++abi.so.1.0 /usr/lib/llvm-14/lib/libc++abi.so
+RUN cp -prv /usr/lib/llvm-15/lib/libc++abi.so.1.0 /usr/lib/llvm-15/lib/libc++abi.so
 
 # EDIT: no longer needed!
 # RUN cp -prv /usr/lib/llvm-14/lib/libunwind.so.1.0 /usr/lib/llvm-14/lib/libunwind.so