Exclude OpenTelemetry updates from the grouped weekly Renovate PR

[trask]

OpenTelemetry dependency updates now always get their own Renovate PR instead of being swallowed into the grouped weekly all patch and minor versions PR. These updates are used for dogfooding and for cascaded releases across the OpenTelemetry Java repos, so batching them until Tuesday delays the release chain.

The affected artifacts are io.opentelemetry.contrib:opentelemetry-aws-xray-propagator, io.opentelemetry.proto:opentelemetry-proto, and io.opentelemetry.semconv:opentelemetry-semconv-incubating.

The exclusion is written as !io.opentelemetry** without a colon, so it covers every OpenTelemetry group id rather than only the bare io.opentelemetry group. !open-telemetry/** covers dependencies sourced from GitHub.

OpenTelemetry-published Docker images such as otel/opentelemetry-collector-contrib are deliberately still grouped, because they are test infrastructure rather than part of a cascaded release.

GitHub Actions and Dockerfile updates are unaffected. The later weekly update rule matches by manager and still overrides the grouping for them, including open-telemetry/shared-workflows action bumps.

The comment on the rule also said "group all patch updates" even though the rule has covered minor updates too; that is corrected here.

[Copilot]

Pull request overview

This PR updates Renovate grouping configuration so OpenTelemetry-related dependency updates don’t get bundled into the weekly “all patch and minor versions” group PR, allowing dogfooding and cascaded releases to land promptly.

Changes:

• Clarifies the weekly grouping rule comment to reflect that it applies to both patch and minor updates.
• Adds exclusions intended to keep OpenTelemetry Maven artifacts and GitHub-sourced OpenTelemetry dependencies out of the weekly grouped PR.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.27%. Comparing base (f4bb945) to head (1e70f6d).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #8727   +/-   ##
=========================================
  Coverage     91.26%   91.27%           
- Complexity    10461    10462    +1     
=========================================
  Files          1006     1006           
  Lines         28244    28244           
  Branches       3564     3564           
=========================================
+ Hits          25778    25779    +1     
  Misses         1674     1674           
+ Partials        792      791    -1     

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[trask]

Reopened from a fork branch as #8728, which has the same commit and the same diff. Closing this one.