fix: email templates for monorepos

[avallete]

What kind of change does this PR introduce?

fs.ValidatePath won't work for paths starting with ../. Fallback to using fs.Stat instead.

What is the current behavior?

Please link any relevant issues here.

What is the new behavior?

Feel free to include screenshots if it includes visual changes.

Additional context

Fixes: #2721

[coveralls]

Pull Request Test Coverage Report for Build 11182980302

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 8 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.06%) to 59.976%

---

Files with Coverage Reduction	New Missed Lines	%
internal/debug/postgres.go	3	64.86%
internal/gen/keys/keys.go	5	12.9%

Totals
Change from base Build 11176899559:	-0.06%
Covered Lines:	6448
Relevant Lines:	10751

---

💛 - Coveralls

[sweatybridge]

Just a nitpick