v0.5.5

This is primarily a bug fix release to address #1616

What's Changed

• Add corresponding seed encryption key in HMSS requisitions. by @renjiezh in #1585
• Fix swapped names for AWS Duchy IP addresses. by @SanjayVas in #1605
• Implement FrequencyVectorBuilder by @kungfucraig in #1604
• Add default service config by @jcorilla in #1603
• Add requisition fulfillment for hmss. by @ple13 in #1567
• Move SecretSeed from database to RequisitionDetails proto. by @renjiezh in #1592
• Support head environment in workflows. by @SanjayVas in #1608
• Enable nightly deployments to head environment. by @SanjayVas in #1609
• Fix setting of Metric state to SUCCEEDED by @tristanvuong2021 in #1593
• Move shareshuffle files to v2alpha subdirectory by @kungfucraig in #1614
• Factor InMemoryVidIndexMap out of VidIndexMap by @kungfucraig in #1615

Full Changelog: v0.5.4...v0.5.5