Mark metric overflow attribute section stable

[utpilla]

Fixes #3904

Changes

• Mark the Overflow attribute section under Cardinality limits as Stable.

• [x] Related issues #
• [ ] Related OTEP(s) #
• [ ] Links to the prototypes (when adding or changing features)
• [x] CHANGELOG.md file updated for non-trivial changes
• [ ] spec-compliance-matrix.md updated if necessary

[tsloughter]

Why is the attribute being marked stable when the limit that causes the attribute to be set is still experimental?

[github-actions[bot]]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[cijothomas]

Why is the attribute being marked stable when the limit that causes the attribute to be set is still experimental?

https://github.com/open-telemetry/opentelemetry-specification/issues/3904#issuecomment-1965579641

[github-actions[bot]]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[github-actions[bot]]

Closed as inactive. Feel free to reopen if this PR is still being worked on.