Bump gem version to `v3.4.3`

Bump gem version to v3.4.2

build: prepare for `v3.4.1` release (#465)

bump for 3.4.0 release

Merge pull request #451 from cedarcode/nt--prepare-for-release-3-3-0

Prepare for `v3.3.0` release

Bump gem version to v3.2.2

Bump gem version to v3.2.1

Bump gem version to v3.2.0

build: prepare new `3.1.0` release

Bump gem version to v3.0.0