Release 3.15.0 (update) (#1497)

* Update @azure/monitor-opentelemetry to 1.18.0 and exporter to 1.0.0-beta.41 for 3.15.0 release

Also bumps @opentelemetry/* deps to 0.217.0 / 2.7.1 to align with the new
monitor-opentelemetry transitive dependencies, and adds the new required
'enabled' method to the TestLogger in api.tests.ts.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Add overrides to fix npm audit vulnerabilities

Force safe transitive versions of protobufjs (>=8.2.0) and serialize-javascript (>=7.0.5) to resolve high-severity advisories in @opentelemetry/otlp-transformer and mocha dependency chains.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Scope dependency overrides and update changelog date

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: JacksonWeber

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-### 3.15.0 (2026-05-09)
+### 3.15.0 (2026-05-13)
 
 #### Breaking Changes