Set-GitHubRepository: Add Support for 'Web Commit Signoff Required' Option

Adds the `WebCommitSignoffRequired` parameter to the `Set-GitHubRepository` function.

Fixes #388

References:

- https://docs.github.com./en/rest/repos/repos#update-a-repository

Author: X-Guardian

Diff for: GitHubRepositories.ps1

@@ -1092,6 +1092,9 @@ filter Set-GitHubRepository
     .PARAMETER IsTemplate
         Specifies whether the repository is made available as a template.
 
+    .PARAMETER WebCommitSignoffRequired
+        Specifies whether to require contributors to sign off on web-based commits.
+
     .PARAMETER Archived
         Specify this to archive this repository.
         NOTE: You cannot unarchive repositories through the API / this module.
@@ -1198,6 +1201,8 @@ filter Set-GitHubRepository
 
         [switch] $IsTemplate,
 
+        [switch] $WebCommitSignoffRequired,
+
         [switch] $Archived,
 
         [switch] $Force,
@@ -1243,6 +1248,7 @@ filter Set-GitHubRepository
     if ($PSBoundParameters.ContainsKey('AllowUpdateBranch')) { $hashBody['allow_update_branch'] = $AllowUpdateBranch.ToBool() }
     if ($PSBoundParameters.ContainsKey('DeleteBranchOnMerge')) { $hashBody['delete_branch_on_merge'] = $DeleteBranchOnMerge.ToBool() }
     if ($PSBoundParameters.ContainsKey('IsTemplate')) { $hashBody['is_template'] = $IsTemplate.ToBool() }
+    if ($PSBoundParameters.ContainsKey('WebCommitSignoffRequired')) { $hashBody['web_commit_signoff_required'] = $WebCommitSignoffRequired.ToBool() }
     if ($PSBoundParameters.ContainsKey('Archived')) { $hashBody['archived'] = $Archived.ToBool() }
 
     if ($Force -and (-not $Confirm))

Diff for: Tests/GitHubRepositories.tests.ps1

@@ -785,6 +785,7 @@ Describe 'GitHubRepositories\Set-GitHubRepository' {
                     AllowUpdateBranch = $true
                     DeleteBranchOnMerge = $true
                     IsTemplate = $true
+                    WebCommitSignoffRequired = $true
                 }
 
                 $updatedRepo = Set-GitHubRepository @updateGithubRepositoryParms -PassThru
@@ -809,6 +810,7 @@ Describe 'GitHubRepositories\Set-GitHubRepository' {
                 $updatedRepo.allow_update_branch | Should -BeTrue
                 $updatedRepo.delete_branch_on_merge | Should -BeTrue
                 $updatedRepo.is_template | Should -BeTrue
+                $updatedRepo.web_commit_signoff_required | Should -BeTrue
             }
         }