DEPS: skip html tests if html5lib is not installed #40198 (#40233)
DEPS: skip html tests if html5lib is not installed #40198 (#40233)


pandas-dev/pandas,dsm054/pandas,gfyoung/pandas,dsm054/pandas,gfyoung/pandas,gfyoung/pandas,jorisvandenbossche/pandas,gfyoung/pandas,dsm054/pandas,gfyoung/pandas,pandas-dev/pandas,rs2/pandas,datapythonista/pandas,datapythonista/pandas,jorisvandenbossche/pandas,jorisvandenbossche/pandas,rs2/pandas,pandas-dev/pandas,rs2/pandas,datapythonista/pandas,jorisvandenbossche/pandas,dsm054/pandas,datapythonista/pandas,pandas-dev/pandas,dsm054/pandas,rs2/pandas