ci: bump CodSpeedHQ/action to v5 - #3

The base and head of this comparison were measured with different runner settings, so their benchmark values are not directly comparable.

What changed between base and head:

• CodSpeed runner v5.0.0 changed how benchmarks are measured (base 4.2.1 → head 5.0.1). View release notes

Re-run the base with the same settings to get a valid performance comparison.

_{Comparing cod-3244-bump-action-v5 (2a948dd) with main (2a34b25)}