Add changelog for 3.7.3-RC2

Author: WojciechMazur

changelogs/3.7.3-RC2.md

@@ -0,0 +1,29 @@
+# Backported chnages
+
+- Warn if implicit default shadows given [#23559](https://github.com/scala/scala3/pull/23559)
+- Bump Scala CLI to v1.8.5 (was v1.8.4) [#23702](https://github.com/scala/scala3/pull/23702)
+- Fix issue with pc breaking in requiredMethod on newly overloaded valueOf [#23708](https://github.com/scala/scala3/pull/23708)
+- Handle default arguments in named parameters for inlay hints [#23641](https://github.com/scala/scala3/pull/23641)
+- Add suppression if nowarn differs [#23652](https://github.com/scala/scala3/pull/23652)
+- Fix match type bounds checking problem [#23695](https://github.com/scala/scala3/pull/23695)
+- Generalize "Don't approximate a type using Nothing as prefix" [#23628](https://github.com/scala/scala3/pull/23628)
+- More careful ClassTag instantiation [#23659](https://github.com/scala/scala3/pull/23659)
+- Use more context for implicit search only if no default argument [#23664](https://github.com/scala/scala3/pull/23664)
+- Fix extracting refinements from intersection types in dynamic select hovers [#23640](https://github.com/scala/scala3/pull/23640)
+
+# Contributors
+
+Thank you to all the contributors who made this release possible 🎉
+
+According to `git shortlog -sn --no-merges 3.7.3-RC1..3.7.3-RC2` these are:
+
+```
+  5  Martin Odersky
+  4  Som Snytt
+  2  Wojciech Mazur
+  1  Guillaume Martres
+  1  Jan Chyb
+  1  Kacper Korban
+  1  Piotr Chabelski
+  1  aherlihy
+```