Bump psake to 5.0.0 and drop alpha1 prerelease tag (#451)

## Summary
- Bump psake `4.9.1` -> `5.0.0` in `requirements.psd1` to enable the
`GitHubActions` output format.
- Wire `OutputFormat = 'GitHubActions'` in `build.ps1` when
`GITHUB_ACTIONS` is set; tidy param splats and brace style.
- Drop the `alpha1` prerelease tag from `Plaster.psd1` ahead of a stable
release.

## Test plan
- [x] `./build.ps1 -Bootstrap` succeeds with psake 5.0.0 installed
- [x] `./build.ps1` runs default task locally (no GITHUB_ACTIONS env)
- [ ] CI workflow produces GitHub Actions grouped output on push
- [ ] Published module manifest has no prerelease tag

Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: HeyItsGilbert

Plaster/Plaster.psd1

@@ -15,7 +15,7 @@
     # PSData hashtable with additional module metadata used by PowerShell.
     PrivateData = @{
         PSData = @{
-            Prerelease   = 'alpha1'
+            # Prerelease   = ''
 
             # Tags applied to this module. These help with module discovery in online galleries.
             Tags = @('Plaster', 'CodeGenerator', 'Scaffold', 'Template', 'JSON', 'PowerShell7')

build.ps1

@@ -25,10 +25,9 @@ param(
             param($Command, $Parameter, $WordToComplete, $CommandAst, $FakeBoundParams)
             try {
                 Get-PSakeScriptTasks -BuildFile './psakeFile.ps1' -ErrorAction 'Stop' |
-                Where-Object { $_.Name -like "$WordToComplete*" } |
-                Select-Object -ExpandProperty 'Name'
-            }
-            catch {
+                    Where-Object { $_.Name -like "$WordToComplete*" } |
+                    Select-Object -ExpandProperty 'Name'
+            } catch {
                 @()
             }
         })]
@@ -59,10 +58,10 @@ if ($Bootstrap) {
         Select-Object -First 1
 
     $powerShellGetModuleParameters = @{
-        Name           = 'PowerShellGet'
+        Name = 'PowerShellGet'
         MinimumVersion = '2.0.0'
         MaximumVersion = '2.99.99'
-        Force          = $true
+        Force = $true
     }
 
     if (-not $powerShellGetModule) {
@@ -77,30 +76,28 @@ if ($Bootstrap) {
 
     # Try-import-first pattern
     $psDependParameters = @{
-        Path          = $PSScriptRoot
-        Recurse       = $False
+        Path = $PSScriptRoot
+        Recurse = $False
         WarningAction = 'SilentlyContinue'
-        Import        = $True
-        Force         = $True
-        ErrorAction   = 'Stop'
+        Import = $True
+        Force = $True
+        ErrorAction = 'Stop'
     }
 
     $importSucceeded = $false
     try {
         Invoke-PSDepend @psDependParameters
         $importSucceeded = $true
         Write-Verbose 'Successfully imported existing modules.' -Verbose
-    }
-    catch {
+    } catch {
         Write-Verbose "Could not import all required modules: $_" -Verbose
         Write-Verbose 'Attempting to install missing or outdated dependencies...' -Verbose
     }
 
     if (-not $importSucceeded) {
         try {
             Invoke-PSDepend @psDependParameters -Install
-        }
-        catch {
+        } catch {
             Write-Error "Failed to install and import required dependencies: $_"
             Write-Error 'This may be due to locked module files. Please restart the build environment or clear module locks.'
             if ($_.Exception.InnerException) {
@@ -109,20 +106,26 @@ if ($Bootstrap) {
             throw
         }
     }
-}
-else {
+} else {
     if (-not (Get-Module -Name 'PSDepend' -ListAvailable)) {
         throw 'Missing dependencies. Please run with the "-Bootstrap" flag to install dependencies.'
     }
     Invoke-PSDepend -Path $PSScriptRoot -Recurse $False -WarningAction 'SilentlyContinue' -Import -Force
 }
 
 if ($PSCmdlet.ParameterSetName -eq 'Help') {
-    Get-PSakeScriptTasks -buildFile $psakeFile |
+    Get-PSakeScriptTasks -BuildFile $psakeFile |
         Format-Table -Property Name, Description, Alias, DependsOn
-}
-else {
+} else {
     Set-BuildEnvironment -Force
-    Invoke-psake -buildFile $psakeFile -taskList $Task -nologo
+    $invokepsakeSplat = @{
+        BuildFile = $psakeFile
+        TaskList = $Task
+        NoLogo = $true
+    }
+    if ($Env:GITHUB_ACTIONS) {
+        $invokepsakeSplat['OutputFormat'] = 'GitHubActions'
+    }
+    Invoke-Psake @invokepsakeSplat
     exit ([int](-not $psake.build_success))
 }

requirements.psd1

@@ -12,7 +12,7 @@
     }
   }
   'psake' = @{
-    Version = '4.9.1'
+    Version = '5.0.0'
   }
   'BuildHelpers' = @{
     Version = '2.0.16'
@@ -23,4 +23,4 @@
   'PSScriptAnalyzer' = @{
     Version = '1.24.0'
   }
-}
+}