[Feature Request] Fix psalm errors for level 8

[dmohns]

Essentially a continuation of this PR: #106

Psalm detect's a couple of errors, mostly

Error: app/Services/RolesService.php:48:29: TooFewArguments: Too few arguments for method Illuminate\Database\Eloquent\Model::with saw 0 (see https://psalm.dev/025)
Error: app/modules/OutstandingDebts/OutstandingDebtsExportService.php:16:26: ParseError: Syntax error, unexpected T_STRING, expecting T_VARIABLE on line 16 (see https://psalm.dev/173)

Please fix these.

Update as of 2024-10-30. Currently psalm is no longer installed, see #325 An additional task here would bringing it back. However this only makes sense, after vimeo/psalm#11112 is resolved.