Correct tag regex in CircleCI config (#1787)
Correct tag regex in CircleCI config (#1787)

- Escape `.` to match dots only, not any character
- Remove redundant groups
open-telemetry/opentelemetry-collector,open-telemetry/opentelemetry-collector-contrib,open-telemetry/opentelemetry-collector,open-telemetry/opentelemetry-collector,open-telemetry/opentelemetry-collector-contrib