chore(main): release 2.21.0

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2.21.0 (2022-09-15)

Features

• Add connection worker skeleton used for multiplexing client (#1778) (b26265e)
• Add Load api for connection worker for multiplexing worker (#1779) (179930e)
• Add location to WriteStream and add WriteStreamView support (#1771) (f446ff4)
• Add proto annotation for non-ascii field mapping (#1776) (1a079ee)
• introducing connection worker to run a loop for fetching / sending requests in a queue. (7dd447d)

Bug Fixes

• api: Numeric/bignumeric conversion issue #1757 (#1768) (5cc96a0)

Dependencies

• Update dependency com.google.cloud:google-cloud-bigquery to v2.15.0 (#1766) (40e0ba0)
• Update dependency com.google.cloud:google-cloud-bigquery to v2.16.0 (#1777) (08a7c8f)
• Update dependency com.google.cloud:google-cloud-bigquery to v2.16.1 (#1781) (7ff7099)
• Update dependency com.google.cloud:google-cloud-shared-dependencies to v3.0.2 (#1772) (3279ef4)
• Update dependency com.google.cloud:google-cloud-shared-dependencies to v3.0.3 (#1780) (ed2cd66)

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🤖 Release is at https://github.com/googleapis/java-bigquerystorage/releases/tag/v2.21.0 🌻

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