ci: drop 32-bit release targets [CI SKIP]

ci/release-cross-platform.ps1

@@ -1,8 +1,8 @@
 param(
     [Parameter(Mandatory)]
     [ValidateSet(
-        'linux-x64', 'linux-arm64', 'linux-arm',
-        'linux-musl-x64', 'linux-musl-arm64', 'linux-musl-arm',
+        'linux-x64', 'linux-arm64',
+        'linux-musl-x64', 'linux-musl-arm64',
         'osx-x64', 'osx-arm64', 'win-x64', 'win-arm64'
     )]
     [string]$RuntimeIdentifier,