[chore] update ping-codeowners-issue to match the valid label (#14024)

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#### Description

Update the `ping-codeowners-issue.sh` script to match the valid label of
`needs-triage`.

Signed-off-by: Paulo Dias <[email protected]>

Author: paulojmdias

.github/workflows/scripts/ping-codeowners-issues.sh

@@ -20,4 +20,4 @@ if [[ -z "${OWNERS}" ]]; then
     exit 0
 fi
 
-gh issue comment "${ISSUE}" --body "Pinging code owners for ${COMPONENT}: ${OWNERS}. See [Adding Labels via Comments](https://github.com/open-telemetry/opentelemetry-collector/blob/main/CONTRIBUTING.md#adding-labels-via-comments) if you do not have permissions to add labels yourself. For example, comment '/label priority:p2 -needs-triaged' to set the priority and remove the needs-triaged label."
+gh issue comment "${ISSUE}" --body "Pinging code owners for ${COMPONENT}: ${OWNERS}. See [Adding Labels via Comments](https://github.com/open-telemetry/opentelemetry-collector/blob/main/CONTRIBUTING.md#adding-labels-via-comments) if you do not have permissions to add labels yourself. For example, comment '/label priority:p2 -needs-triage' to set the priority and remove the needs-triage label."