v1.43.0

Release v1.43.0 which is homologous to Rust 1.43.0.

Updates

• 4e14797 Update OpenSSL to v1.1.1 (LTS) and v1.0.2 deprecated.
  View more at https://www.openssl.org/policies/releasestrat.html.
• 66a2728 Image dependencies (openssl, libpq, zlib, Mac OS X SDK for OS X Cross) as arguments.

Dependency updates

• OpenSSL updated to v1.1.1.
• PostgreSQL libpq updated to v11.7.

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