Fix Solaris tests and add nightly CI job

Closes GH-20709

Zend/tests/stack_limit/stack_limit_010.phpt

@@ -27,7 +27,9 @@ $expectedMaxSize = match(php_uname('s')) {
         'true' => 16*1024*1024, // https://github.com/actions/runner-images/pull/3328
         default => 8*1024*1024,
     },
-    'SunOS' => 10 * 1024 * 1024,
+    'SunOS' => preg_match('/(omnios|illumos|smartos|oi-|openindiana|joyent)/i', php_uname('v'))
+        ? 10 * 1024 * 1024
+        : 8 * 1024 * 1024,
     'Windows NT' => 67108864 - 4*4096, // Set by sapi/cli/config.w32
 };