prepare 1.7.0 (#656)

Co-authored-by: Tigran Najaryan <[email protected]>

Author: dmathieu

CHANGELOG.md

@@ -4,6 +4,12 @@
 
 The full list of changes can be found in the compare view for the respective release at <https://github.com/open-telemetry/opentelemetry-proto/releases>.
 
+## 1.7.0 - 2025-05-19
+
+### Added
+
+- profiles: introduce Dictionary message in ProfilesData, and move the lookup tables into it. [#650](https://github.com/open-telemetry/opentelemetry-proto/pull/650)
+
 ## 1.6.0 - 2025-04-29
 
 ### Added