Sentinel-3 has invalid checksums

[m-mohr]

The values for file:checksum are not valid multihash values, e.g. in https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-3-olci-wfr-l2-netcdf/items/S3A_OL_2_WFR_20240310T021506_20240310T021806_0179_110_046_1980

[TomAugspurger]

xref stactools-packages/sentinel3#32. Once that's fixed upstream we can update our production version and reprocess the existing items.

For reference, that item currently has:

    "assets": {
        "iwv": {
            "href": "https://sentinel3euwest.blob.core.windows.net/sentinel-3/OLCI/OL_2_WFR___/2024/03/10/S3A_OL_2_WFR____20240310T021506_20240310T021806_20240311T083844_0179_110_046_1980_MAR_O_NT_003.SEN3/iwv.nc",
            "s3:shape": [
                4091,
                4865
            ],
            "file:size": 2866583,
            "file:checksum": "43cffe252dc0eacac1f462a27e833b87"
...