chore: release 1.49.0 (googleapis#33)

* updated CHANGELOG.md [ci skip]

* updated README.md [ci skip]

* updated versions.txt [ci skip]

* updated google-cloud-spanner-bom/pom.xml [ci skip]

* updated pom.xml [ci skip]

* updated grpc-google-cloud-spanner-admin-database-v1/pom.xml [ci skip]

* updated grpc-google-cloud-spanner-admin-instance-v1/pom.xml [ci skip]

* updated grpc-google-cloud-spanner-v1/pom.xml [ci skip]

* updated proto-google-cloud-spanner-admin-database-v1/pom.xml [ci skip]

* updated proto-google-cloud-spanner-admin-instance-v1/pom.xml [ci skip]

* updated proto-google-cloud-spanner-v1/pom.xml [ci skip]

* updated google-cloud-spanner/pom.xml [ci skip]

chore: release 1.48.0 (googleapis#8)

* created CHANGELOG.md [ci skip]

* updated README.md [ci skip]

* updated versions.txt [ci skip]

* updated pom.xml [ci skip]

* updated google-cloud-spanner-bom/pom.xml [ci skip]

* updated google-cloud-spanner/pom.xml [ci skip]

* updated grpc-google-cloud-spanner-admin-database-v1/pom.xml [ci skip]

* updated grpc-google-cloud-spanner-admin-instance-v1/pom.xml [ci skip]

* updated grpc-google-cloud-spanner-v1/pom.xml [ci skip]

* updated proto-google-cloud-spanner-admin-database-v1/pom.xml [ci skip]

* updated proto-google-cloud-spanner-admin-instance-v1/pom.xml [ci skip]

* updated proto-google-cloud-spanner-v1/pom.xml [ci skip]

Release v0.120.0 (#6988)

Release v0.119.0 (#6772)

Release v0.118.0 (#6704)

Release v0.117.0 (#6664)

Release v0.116.0 (#6518)

Release google-cloud-java v0.115.0 (#6476)

* Release v0.115.0

* fix bigtable-it config

Release google-cloud-java v0.112.0 (#6420)

* Release v0.112.0

* Fix translate pom

Release google-cloud-java v0.111.0 (#6347)

* Release v0.111.0

* Change Bigtable version to 1.0.0.