Bump smarty/smarty from 3.1.31 to 3.1.48

Bumps [smarty/smarty](https://github.com/smarty-php/smarty) from 3.1.31 to 3.1.48.
- [Release notes](https://github.com/smarty-php/smarty/releases)
- [Changelog](https://github.com/smarty-php/smarty/blob/v3.1.48/CHANGELOG.md)
- [Commits](smarty-php/smarty@v3.1.31...v3.1.48)

---
updated-dependencies:
- dependency-name: smarty/smarty
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

composer.json

@@ -16,7 +16,7 @@
   },
   "require": {
     "php": "^5.3.2 || ^7",
-    "smarty/smarty": "3.1.31",
+    "smarty/smarty": "3.1.48",
     "ramsey/array_column": "^1.1",
     "justinrainbow/json-schema": "^5.2"
   },