Fix metrics report action erroring on PRs from forks

[dcastil]

E.g. happened here: https://github.com/dcastil/tailwind-merge/actions/runs/13976164737/job/39207871055

Quite annoying that external contributors always see a failed action. That should not be the case.

[github-actions]

Metrics report

At head commit cf63e01 and base commit 51b3c3a at 2025-03-22T21:32:04.042Z

Size

No changes

All size metrics

Export	Size original	Size minified	Size minified and Brotli compressed
tailwind-merge esm	83.97 kB 0%	22.45 kB 0%	6.27 kB 0%
› createTailwindMerge	13.42 kB 0%	3.61 kB 0%	1.44 kB 0%
› extendTailwindMerge	83.26 kB 0%	21.82 kB 0%	6.03 kB 0%
› fromTheme	0.16 kB 0%	0.08 kB 0%	0.09 kB 0%
› getDefaultConfig	67.50 kB 0%	17.32 kB 0%	4.48 kB 0%
› mergeConfigs	2.12 kB 0%	0.80 kB 0%	0.27 kB 0%
› twJoin	1.06 kB 0%	0.26 kB 0%	0.16 kB 0%
› twMerge	80.95 kB 0%	20.96 kB 0%	5.85 kB 0%
› validators	4.49 kB 0%	1.69 kB 0%	0.73 kB 0%
tailwind-merge cjs	84.23 kB 0%	28.12 kB 0%	6.66 kB 0%
tailwind-merge/es5 esm	89.17 kB 0%	24.37 kB 0%	6.51 kB 0%
› createTailwindMerge	15.27 kB 0%	4.20 kB 0%	1.56 kB 0%
› extendTailwindMerge	88.08 kB 0%	23.73 kB 0%	6.25 kB 0%
› fromTheme	0.21 kB 0%	0.10 kB 0%	0.09 kB 0%
› getDefaultConfig	69.87 kB 0%	18.43 kB 0%	4.55 kB 0%
› mergeConfigs	2.46 kB 0%	0.87 kB 0%	0.29 kB 0%
› twJoin	1.08 kB 0%	0.26 kB 0%	0.14 kB 0%
› twMerge	85.17 kB 0%	22.66 kB 0%	6.03 kB 0%
› validators	6.09 kB 0%	2.23 kB 0%	0.76 kB 0%
tailwind-merge/es5 cjs	89.43 kB 0%	30.06 kB 0%	6.87 kB 0%

[codspeed-hq]

CodSpeed Performance Report

Merging #551 will not alter performance

_{Comparing other/fix-metrics-report-action-erroring-on-prs-from-forks (cf63e01) with main (51b3c3a)}

Summary

✅ 5 untouched benchmarks

[github-actions]

This was addressed in release v3.1.0.