tests: keep Import-TestData mask assertion under the 150-char line limit

super-linter enforces PSScriptAnalyzer's PSAvoidLongLines (max 150), which is not in the default local ruleset; shorten the ::add-mask:: assertion message.

Author: MariusStorhaug

tests/Import-TestData.Tests.ps1

@@ -48,7 +48,7 @@ try {
     Set-Content -Path $githubEnvPath -Value '' -NoNewline
     $env:PSMODULE_TEST_DATA = '{"secrets":{"MY_SECRET":"not-a-real-secret"}}'
     $information = Import-TestData 6>&1 | Out-String
-    & $assert ($information -match '::add-mask::not-a-real-secret') 'Expected the secret value to be masked via ::add-mask:: on the information stream.'
+    & $assert ($information -match '::add-mask::not-a-real-secret') 'Expected the secret to be masked via ::add-mask:: on the information stream.'
 
     # A no-op when no test data is provided; nothing on the success/pipeline stream.
     $env:PSMODULE_TEST_DATA = ''