Update Open Telemetry Gems to v0.29.0

This MR contains the following updates:

Package	Update	Change
opentelemetry-exporter-otlp (source, changelog)	minor	0.28.1 -> 0.29.0
opentelemetry-instrumentation-action_view (source, changelog)	patch	0.7.2 -> 0.7.3
opentelemetry-instrumentation-aws_sdk (source, changelog)	minor	0.5.4 -> 0.6.0
opentelemetry-instrumentation-pg (source, changelog)	minor	0.28.0 -> 0.29.0

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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Release Notes

open-telemetry/opentelemetry-ruby (opentelemetry-exporter-otlp)

v0.29.0

• ADDED: Add support for mutual TLS.

open-telemetry/opentelemetry-ruby-contrib (opentelemetry-instrumentation-action_view)

v0.7.3

• FIXED: ActionView Support Legacy Formats

open-telemetry/opentelemetry-ruby-contrib (opentelemetry-instrumentation-aws_sdk)

v0.6.0

• ADDED: All AWS services emit traces

open-telemetry/opentelemetry-ruby-contrib (opentelemetry-instrumentation-pg)

v0.29.0

• BREAKING CHANGE: Return message when sql is over the obfuscation limit. Fixes a bug where sql statements with prepended comments that hit the obfuscation limit would be sent raw.

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