[Anagram]: Updated Tests from problem-specifications

[BethanyG]

• Synced tests.toml
• Accepted two new test cases
• Regenerated test file

This PR is also a test of the changes discussed here on the forum. With any luck, the new workflow will run with the correct permissions and without errors. 🙂

[github-actions]

This PR touches files which potentially affect the outcome of the tests of an exercise. This will cause all students' solutions to affected exercises to be re-tested.

If this PR does not affect the result of the test (or, for example, adds an edge case that is not worth rerunning all tests for), please add the following to the merge-commit message which will stops student's tests from re-running. Please copy-paste to avoid typos.

[no important files changed]

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