Bump Default Node version to 14 for Cypress 12 & provide Base-18 executor

[emilyrohrbough]

Bump Default Node version to 14 for Cypress 12

• https://github.com/cypress-io/circleci-orb/blob/master/src/orb.yml#L30
• https://github.com/cypress-io/circleci-orb/blob/master/src/orb.yml#L382
• https://github.com/cypress-io/circleci-orb/blob/master/src/orb.yml#L749

Provide base-18 executor to support node 18

[jennifer-shehane]

The default node version is now set to 16.16.0 in version 3.0.0 of the orb. Closing as resolved.