Run metrics with debug false to reduce log spam

[samfreund]

Description

Because our metrics are updating every five seconds, our previous approach of logging all the commands we run for metrics results in a lot of debug log spam. This adjusts the shellExec for metrics so that we no longer spam.

Meta

Merge checklist:

• Pull Request title is short, imperative summary of proposed changes
• The description documents the what and why
• If this PR changes behavior or adds a feature, user documentation is updated
• If this PR touches photon-serde, all messages have been regenerated and hashes have not changed unexpectedly
• If this PR touches configuration, this is backwards compatible with settings back to v2024.3.1
• If this PR touches pipeline settings or anything related to data exchange, the frontend typing is updated
• If this PR addresses a bug, a regression test for it is added

[Gold856]

This cleaned up the debug output nicely:

No more metrics command spam.