Update paragonie/constant_time_encoding requirement || ^3.0

Updates the requirements on [paragonie/constant_time_encoding](https:/paragonie/constant_time_encoding) to permit the latest version.
- [Release notes](https:/paragonie/constant_time_encoding/releases)
- [Commits](paragonie/constant_time_encoding@v2.0.0...v3.0.0)

---
updated-dependencies:
- dependency-name: paragonie/constant_time_encoding
  dependency-type: direct:production
...

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

composer.json

@@ -18,7 +18,7 @@
  "require": {
  "php": ">=8.1",
  "ext-mbstring": "*",
- "paragonie/constant_time_encoding": "^2.0",
+ "paragonie/constant_time_encoding": "^2.0 || ^3.0",
  "psr/clock": "^1.0",
  "symfony/deprecation-contracts": "^3.2"
  },