[kaldi] update to 5.5.636 and drop epoch number

2 jobs for kaldi in 4 minutes and 22 seconds (queued for 2 seconds)
Name Stage Failure
failed
build_linux Build
    notest=notest, need_source_download=need_source_download, variants=variants)
File "/scratch/builds/bob/bob.conda/miniconda/lib/python3.7/site-packages/conda_build/build.py", line 2344, in build_tree
notest=notest,
File "/scratch/builds/bob/bob.conda/miniconda/lib/python3.7/site-packages/conda_build/build.py", line 1418, in build
try_download(m, no_download_source=False, raise_error=True)
File "/scratch/builds/bob/bob.conda/miniconda/lib/python3.7/site-packages/conda_build/render.py", line 641, in try_download
raise RuntimeError("Failed to download or patch source. Please see build log for info.")
RuntimeError: Failed to download or patch source. Please see build log for info.
ERROR: Job failed: exit code 1