chore(main): release 2.19.0 (#646)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

CHANGELOG.md

@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-api-core/#history
 
+## [2.19.0](https://github.com/googleapis/python-api-core/compare/v2.18.0...v2.19.0) (2024-04-29)
+
+
+### Features
+
+* Add google.api_core.version_header ([#638](https://github.com/googleapis/python-api-core/issues/638)) ([a7b53e9](https://github.com/googleapis/python-api-core/commit/a7b53e9e9a7deb88baf92a2827958429e3677069))
+
 ## [2.18.0](https://github.com/googleapis/python-api-core/compare/v2.17.1...v2.18.0) (2024-03-20)
 
 

google/api_core/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "2.18.0"
+__version__ = "2.19.0"