Merge branch 'master' into next-v5.0

contracts/utils/introspection/ERC165Checker.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts (last updated v4.8.0) (utils/introspection/ERC165Checker.sol)
+// OpenZeppelin Contracts (last updated v4.8.2) (utils/introspection/ERC165Checker.sol)
 
 pragma solidity ^0.8.0;
 
@@ -101,6 +101,10 @@ library ERC165Checker {
      * @dev Assumes that account contains a contract that supports ERC165, otherwise
      * the behavior of this method is undefined. This precondition can be checked
      * with {supportsERC165}.
+     *
+     * Some precompiled contracts will falsely indicate support for a given interface, so caution
+     * should be exercised when using this function.
+     *
      * Interface identification is specified in ERC-165.
      */
     function supportsERC165InterfaceUnchecked(address account, bytes4 interfaceId) internal view returns (bool) {

contracts/utils/introspection/ERC1820Implementer.sol

@@ -12,6 +12,8 @@ import "./IERC1820Implementer.sol";
  * declare their willingness to be implementers.
  * {IERC1820Registry-setInterfaceImplementer} should then be called for the
  * registration to be complete.
+ *
+ * CAUTION: This file is deprecated as of v4.9 and will be removed in the next major release.
  */
 contract ERC1820Implementer is IERC1820Implementer {
     bytes32 private constant _ERC1820_ACCEPT_MAGIC = keccak256("ERC1820_ACCEPT_MAGIC");