add and update changelog entries

changelog/3297.deprecated.md

@@ -1 +1,12 @@
-- `PipelineParams.allow_interruptions` is now deprecated, use `LLMUserAggregator`'s new parameter `user_mute_strategies` instead.
+- `PipelineParams.allow_interruptions` is now deprecated, use `LLMUserAggregator`'s new parameter `turn_start_strategies` instead. For example, to disable interruptions but still get user turns you can do:
+
+  ```python
+  context_aggregator = LLMContextAggregatorPair(
+      context,
+      user_params=LLMUserAggregatorParams(
+          turn_start_strategies=TurnStartStrategies(
+              user=[TranscriptionUserTurnStartStrategy(enable_interruptions=False)],
+          ),
+      ),
+  )
+  ```

changelog/3316.added.md

@@ -0,0 +1 @@
+- Added `enable_interruptions` constructor argument to all user turn strategies. This tells the `LLMUserAggregator` to push or not push an `InterruptionFrame`.

changelog/3316.other.md

@@ -0,0 +1 @@
+- Added `52-live-transcription.py` foundational example demonstrating live transcription and translation from English to Spanish. In this example, the bot is not interruptible: as the user continues speaking, English transcriptions are queued, and the bot continuously translates and speaks each queued sentence in Spanish without being interrupted by new user speech.