Merge branch '1.16.x'

Merge branch '1.15.x' into 1.16.x

Reduce allocation in gRPC server convention

Closes gh-7581

Fix build cache misses from overlapping outputs in statsd module (#7349)

Disable the jar task for micrometer-registry-statsd since shadowJar
uses archiveClassifier='', producing the same output path and causing
overlapping output cache invalidation.

Also add missing Build-Timezone and Build-Url to MANIFEST.MF
normalization to prevent cache misses across environments.

Signed-off-by: Gasper Kojek <gkojek@gradle.com>

Bump io.opentelemetry.proto:opentelemetry-proto (#7265)

Bumps [io.opentelemetry.proto:opentelemetry-proto](https://github.com/open-telemetry/opentelemetry-proto-java) from 1.9.0-alpha to 1.10.0-alpha.
- [Release notes](https://github.com/open-telemetry/opentelemetry-proto-java/releases)
- [Commits](https://github.com/open-telemetry/opentelemetry-proto-java/commits)

---
updated-dependencies:
- dependency-name: io.opentelemetry.proto:opentelemetry-proto
  dependency-version: 1.10.0-alpha
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Polish order of Jakarta Mail in list/table

Order items in alphabetical order.

Document DefaultMeterObservationHandler (#7261)

Add documentation for DefaultMeterObservationHandler to the Observation
Components page, explaining the metrics it creates from Observations:

- Timer (<name>) on stop, with low cardinality tags and error tag
- LongTaskTimer (<name>.active) on start, tracking in-progress duration
- Counter (<name>.<event>) on event signals

Include code examples showing basic usage and how to disable
LongTaskTimer via IgnoredMeters.

Closes gh-6361

Signed-off-by: seonghyeoklee <dltjdgur327@gmail.com>

Deprecate Apache HTTP Client 5 instrumentation

Deprecates our instrumentation in micrometer-core in favor of the instrumentation maintained by the Apache HTTP Client project, released as the httpclient5-observation artifact with version 5.6.

See https://hc.apache.org/httpcomponents-client-5.6.x/observation.html

Closes gh-7158