chore(deps): pin dependency ticketswap/phpstan-error-formatter to 1.2.3 (#1779)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

composer.json

@@ -34,7 +34,7 @@
     "symfony/polyfill-php81": "^1.23",
     "symfony/var-exporter": "^5 || ^6 || ^7",
     "thecodingmachine/safe": "^1.3 || ^2 || ^3",
-    "ticketswap/phpstan-error-formatter": "^1.2"
+    "ticketswap/phpstan-error-formatter": "1.2.3"
   },
   "suggest": {
     "amphp/http-server": "To leverage async resolving with webserver on AMPHP platform",