victorialogs: ugraded datadog extension version in compose to one which supports custom endpoint configuration (#7989)

recently new datadog extension was released, where custom endpoint
configuration was added

### Describe Your Changes

Please provide a brief description of the changes you made. Be as
specific as possible to help others understand the purpose and impact of
your modifications.

### Checklist

The following checks are **mandatory**:

- [ ] My change adheres [VictoriaMetrics contributing
guidelines](https://docs.victoriametrics.com/contributing/).

deployment/docker/victorialogs/datadog-serverless/aws/Dockerfile

@@ -26,7 +26,7 @@ RUN \
 WORKDIR /var/task
 COPY --from=aws-lambda-rie /aws-lambda-rie /var/task/aws-lambda-rie
 COPY main.py /var/task/
-COPY --from=public.ecr.aws/datadog/lambda-extension:67 /opt/. /opt/
+COPY --from=public.ecr.aws/datadog/lambda-extension:68 /opt/. /opt/
 
 ENTRYPOINT ["/var/task/aws-lambda-rie"]
 CMD ["/usr/local/bin/python", "-m", "awslambdaric", "main.lambda_handler"]

deployment/docker/victorialogs/datadog-serverless/aws/compose.yml

@@ -13,7 +13,6 @@ services:
       DD_SOURCE: test
       DD_API_KEY: test
       DD_DD_URL: http://dd-proxy:8427
-      DD_EXTENSION_VERSION: compatibility
       DD_PROFILING_ENABLED: false
       DD_ENHANCED_METRICS: false
       DD_LOGS_CONFIG_LOGS_DD_URL: http://dd-proxy:8427