Bump the production-dependencies group with 2 updates

Updates the requirements on [simplesamlphp/xml-common](https://github.com/simplesamlphp/xml-common) and [simplesamlphp/xml-security](https://github.com/simplesamlphp/xml-security) to permit the latest version.

Updates `simplesamlphp/xml-common` to 1.23.2
- [Release notes](https://github.com/simplesamlphp/xml-common/releases)
- [Commits](simplesamlphp/xml-common@v1.21.0...v1.23.2)

Updates `simplesamlphp/xml-security` to 1.12.0
- [Release notes](https://github.com/simplesamlphp/xml-security/releases)
- [Commits](simplesamlphp/xml-security@v1.11.0...v1.12.0)

---
updated-dependencies:
- dependency-name: simplesamlphp/xml-common
  dependency-type: direct:production
  dependency-group: production-dependencies
- dependency-name: simplesamlphp/xml-security
  dependency-type: direct:production
  dependency-group: production-dependencies
...

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

composer.json

@@ -18,8 +18,8 @@
         "psr/clock": "^1.0",
         "psr/log": "^2.0 | ^3.0",
         "simplesamlphp/assert": "^1.6",
-        "simplesamlphp/xml-common": "~1.21.0",
-        "simplesamlphp/xml-security": "~1.11.0"
+        "simplesamlphp/xml-common": "~1.23.2",
+        "simplesamlphp/xml-security": "~1.12.0"
     },
     "require-dev": {
         "beste/clock": "^3.0",