Bump PSModule/Invoke-Pester from 4.2.4 to 5.1.0

Updates the CI test workflow (Action-Test.yml) to the latest Invoke-Pester
release. This supersedes the original 4.2.4 -> 4.2.5 bump.

The v5.0.0 breaking change (Version/Prerelease inputs now control Pester and
must be renamed to GitHubVersion/GitHubPrerelease) does not affect this
workflow, because the Invoke-Pester step sets no Version/Prerelease inputs.
Invoke-Pester is used only in the test workflow, so this has no runtime impact
on consumers of the action.

Author: dependabot[bot]

.github/workflows/Action-Test.yml

@@ -42,6 +42,6 @@ jobs:
           IssueBody: ${{ fromJson(steps.GetIssueFileContent.outputs.result).issueFileContent }}
 
       - name: Action-Test-Results
-        uses: PSModule/Invoke-Pester@abddf7bef0d0614d7ca322036af6a06ee0fb4d44 # v4.2.4
+        uses: PSModule/Invoke-Pester@4ff33199141fdf22568990b6107fe3148ae93a1c # v5.1.0
         env:
           data: ${{ steps.Action-Test.outputs.data }}