Changelog for v3.75.2 (#516)

### Bug Fixes

- [runtime] Revert changes to target net8 in provider SDKs
[#515](#515)

Author: justinvp

.changes/unreleased/Bug Fixes-515.yaml

@@ -0,0 +1,6 @@
+## v3.75.2 - 2025-02-26
+
+### Bug Fixes
+
+- [runtime] Revert changes to target net8 in provider SDKs [#515](https://github.com/pulumi/pulumi-dotnet/pull/515)
+