Create release v1.2.0

[WadeBarnes]

Create an official v1.2.0 release.

Review and update release docs as needed.

Dependencies:

• Create release v1.13.2 hyperledger/indy-node#1828
• Create release v1.13.1 hyperledger/indy-plenum#1645
• [v1.1.1] - Update Version Number for Release token-plugin#459

[WadeBarnes]

Several updates were required to complete the release:

Sovrin

• [v1.2.0] - Update Version Number for Release #360
• Upgrade semver #359
• Automated Update to indy-node==1.1.1 #357
• Update indy-node, token-plugin and GitHub actions versions #356
• Automated Update to indy-node==1.1.0 #355
• Automated Update to indy-node==1.13.2 #354

Token Plugins

• [v1.1.1] - Update Version Number for Release token-plugin#459
• Update indy-node version for release. token-plugin#458
• [v1.1.0] - Update Version Number for Release token-plugin#457
• Upgrade to latest action versions token-plugin#456
• [v1.1.0-rc1] - Update Version Number for Release token-plugin#455
• Update actions and dev containers token-plugin#454
• Update branch names in workflows. token-plugin#453
• Add project announcement section. token-plugin#452

Indy-test-automation

• Refactor installation of package under test hyperledger/indy-test-automation#138
• Update Dockerfile for build image. hyperledger/indy-test-automation#136

[WadeBarnes]

Release v1.2.0 complete.