release: Release 5 gems

[github-actions]

This pull request prepares new gem releases for the following gems:

• opentelemetry-instrumentation-action_pack 0.2.1 (was 0.2.0)
• opentelemetry-instrumentation-rack 0.21.1 (was 0.21.0)
• opentelemetry-instrumentation-mongo 0.21.0 (was 0.20.0)
• opentelemetry-instrumentation-net_http 0.21.0 (was 0.20.0)
• opentelemetry-instrumentation-pg 0.22.0 (was 0.21.0)

For each gem, this pull request modifies the gem version and provides an initial changelog entry based on conventional commit messages. You can edit these changes before merging, to release a different version or to alter the changelog text.

• To confirm this release, merge this pull request, ensuring the "release: pending" label is set. The release script will trigger automatically on merge.
• To abort this release, close this pull request without merging.

The generated changelog entries have been copied below:

---

opentelemetry-instrumentation-action_pack

v0.2.1 / 2022-10-04

• FIXED: Ensures the correct route is add to http.route span attribute

---

opentelemetry-instrumentation-rack

v0.21.1 / 2022-10-04

• FIXED: Bring http.request.header and http.response.header in line with semconv

---

opentelemetry-instrumentation-mongo

v0.21.0 / 2022-10-04

• ADDED: Support mongodb db statement without obfuscation

---

opentelemetry-instrumentation-net_http

v0.21.0 / 2022-10-04

• ADDED: Add Net::HTTP :untraced_hosts option
• FIXED: Rename HTTP CONNECT for low level connection spans

---

opentelemetry-instrumentation-pg

v0.22.0 / 2022-10-04

• ADDED: Add with_attributes context propagation for PG instrumentation

[robbkidd]

[github-actions]

All releases completed successfully.

Successfully released opentelemetry-instrumentation-action_pack 0.2.1

Successfully released opentelemetry-instrumentation-mongo 0.21.0

Successfully released opentelemetry-instrumentation-net_http 0.21.0

Successfully released opentelemetry-instrumentation-pg 0.22.0

Successfully released opentelemetry-instrumentation-rack 0.21.1