chore(main): release 0.18.0

[JKRhb]

:robot: I have created a release beep boop

0.18.0 (2024-07-13)

⚠ BREAKING CHANGES

• update dependencies
• increase minimal Dart SDK version to 3.0.0

Features

• add security level parameter to DTLS contexts (25ed88f)
• generate binding for SSL_CTX_set_security_level (445c6e6)
• regenerate bindings (7075590)

Bug Fixes

• lower security level for main example (274edfa)

Miscellaneous Chores

• fix release please configuration (317b92f)
• increase minimal Dart SDK version to 3.0.0 (a4e421b)
• update dependencies (9894b2b)

---

This PR was generated with Release Please. See documentation.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 83.37%. Comparing base (317b92f) to head (2f2adc5).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #116 +/- ## ======================================= Coverage 83.37% 83.37% ======================================= Files 11 11 Lines 740 740 ======================================= Hits 617 617 Misses 123 123 ```

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