Bump Emscripten version to 3.1.66 #1959

Job	Run time
Update the docker container if it is modified	2m 56s
gcc-14 \| Release	5h 27m 4s
gcc-14 \| Debug	2h 25m 41s
gcc-13 \| Release	2h 1m 49s
gcc-13 \| Debug	59m 37s
clang-18, \| Release	1h 40m 23s
clang-18, \| Debug	2h 16m 12s
emcc \| Release	1h 28m 30s
emcc \| Debug	1h 24m 39s
	17h 46m 51s

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