add changeset

Author: tatomyr

.changeset/tough-keys-compare.md

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+---
+"@redocly/openapi-core": minor
+"@redocly/cli": minor
+---
+
+Enabled `no-required-schema-properties-undefined`, `no-schema-type-mismatch`, and `no-enum-type-mismatch` rules for **AsyncAPI** and **Arazzo** specifications.
+Adjusted the rules' severities in the `recommended` ruleset.