Update paragonie/constant_time_encoding requirement from ^2.0 to ^2.0 || ^3.0

[dependabot[bot]]

Updates the requirements on paragonie/constant_time_encoding to permit the latest version.

Release notes

Sourced from paragonie/constant_time_encoding's releases.

Version 3.0.0

• New major bump due to increased minimum PHP requirements (from PHP 7 to PHP 8)
• Supports PHP 8.4 without deprecation warnings for implicit null

Commits

• df1e7fd Update ramsey/composer-install to v3
• 4f03317 Tolerate Psalm 4
• b9736ba Attempt to fix GHA
• 7ca93af Update guidance
• dd2e689 Update Psalm to 5 instead of 4
• 61d83da Remove old PHP
• 8fcab90 Prepare for v3.0.0
• 52a0d99 Fix grammar on comment
• 0288ddd Merge pull request #56 from Grundik/master
• f9bb09c Merge pull request #57 from Chris53897/feature/fix-ci-deprecations
• Additional commits viewable in compare view

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