Governance: Community Managers can assist in triage

We'd like our community managers to be able to assist in issue
triage - mostly to justify giving them the Github permissions to
add and edit labels on issues in the project.

As community managers are not expected to be technical, we're not
expecting them to act fully as reviewers, but letting them move
issues between repos, close issues that have gotten out of hand
and are accumulating CoC violations, and label persistent
problems as things that should be strongly considered for future
releases are valuable.

Signed-off-by: Matt Heon <matthew.heon@pm.me>

GOVERNANCE.md

@@ -146,6 +146,7 @@ Description: Community managers are responsible for the project’s community in
     * Managing the project website and gathering associated metrics
     * Managing the project’s social media accounts and mailing lists and gathering associated metrics
     * Creating and publishing minutes from Core Maintainer meetings
+	* Assisting in triage of upstream issues
 * Requirements
     * Sustained high level of contribution to the community, including attending and engaging in community meetings, contributions to the website, and contributions to documentation, for at least six months
     * Is able to exercise judgment for the good of the project, independent of their employer, friends, or team