Add 0.19.0 release date to changelog

Author: ndgrigorian

CHANGELOG.md

@@ -12,7 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
-## [0.19.0] - Feb. XX, 2025
+## [0.19.0] - Feb. 26, 2025
 
 This release features official, out-of-the-box support for compiling `dpctl` for specified AMD GPU architectures, the addition of new function `tensor.top_k`, a radix-sort-based implementation of sorting functions, and improvements to interoperability with DLPack through `tensor.dldevice_to_sycl_device` and `tensor.sycl_device_to_dldevice`.