Update psalm/phar requirement from 6.20.* to 7.0.* - #141

src/EventLoop/Driver/IoPollDriver.php:256:21: UndefinedDocblockClass: Io\Poll\Watcher is not defined for the analysed PHP version 8.1 (it was introduced in PHP 8.6); define a polyfill (symfony/polyfill-php86 ships some of the symbols of that version), or raise the analysed PHP version (see https://psalm.dev/200)

src/EventLoop/Driver/IoPollDriver.php:108:34: UndefinedClass: Io\Poll\Context is not defined for the analysed PHP version 8.1 (it was introduced in PHP 8.6); define a polyfill (symfony/polyfill-php86 ships some of the symbols of that version), or raise the analysed PHP version (see https://psalm.dev/019)

src/EventLoop/Driver/IoPollDriver.php:77:30: UndefinedClass: Io\Poll\Context is not defined for the analysed PHP version 8.1 (it was introduced in PHP 8.6); define a polyfill (symfony/polyfill-php86 ships some of the symbols of that version), or raise the analysed PHP version (see https://psalm.dev/019)

src/EventLoop/Driver/IoPollDriver.php:52:13: UndefinedClass: Io\Poll\Context is not defined for the analysed PHP version 8.1 (it was introduced in PHP 8.6); define a polyfill (symfony/polyfill-php86 ships some of the symbols of that version), or raise the analysed PHP version (see https://psalm.dev/019)

src/EventLoop/Driver/IoPollDriver.php:45:13: UndefinedDocblockClass: Io\Poll\Watcher is not defined for the analysed PHP version 8.1 (it was introduced in PHP 8.6); define a polyfill (symfony/polyfill-php86 ships some of the symbols of that version), or raise the analysed PHP version (see https://psalm.dev/200)

src/EventLoop/Driver/IoPollDriver.php:45:5: UndefinedDocblockClass: Io\Poll\Watcher is not defined for the analysed PHP version 8.1 (it was introduced in PHP 8.6); define a polyfill (symfony/polyfill-php86 ships some of the symbols of that version), or raise the analysed PHP version (see https://psalm.dev/200)

src/EventLoop/Driver/IoPollDriver.php:42:22: UndefinedClass: Io\Poll\Context is not defined for the analysed PHP version 8.1 (it was introduced in PHP 8.6); define a polyfill (symfony/polyfill-php86 ships some of the symbols of that version), or raise the analysed PHP version (see https://psalm.dev/019)

examples/http-client-suspension.php:65:1: TaintedTextWithQuotes: Detected tainted text with possible quotes (see https://psalm.dev/274)

examples/http-client-suspension.php:65:1: TaintedHtml: Detected tainted HTML (see https://psalm.dev/245)

examples/benchmark-memory.php:28:26: TaintedCallable: Detected tainted text (see https://psalm.dev/243)

src/EventLoop/Driver/UvDriver.php:198:30: MixedPropertyTypeCoercion: $this->streams expects 'array<int, resource>', parent type `non-empty-array<int, mixed|resource>` provided (see https://psalm.dev/196)

src/EventLoop/Driver/UvDriver.php:198:21: MixedAssignment: Unable to determine the type that $event is being assigned to (see https://psalm.dev/032)

src/EventLoop/Driver/UvDriver.php:196:21: MixedAssignment: Unable to determine the type that $event is being assigned to (see https://psalm.dev/032)

src/EventLoop/Driver/UvDriver.php:91:78: MixedOperand: Left operand cannot be mixed (see https://psalm.dev/059)

src/EventLoop/Driver/UvDriver.php:91:66: MixedOperand: Right operand cannot be mixed (see https://psalm.dev/059)

src/EventLoop/Driver/UvDriver.php:83:32: MixedArgument: Argument 1 of uv_poll_start cannot be mixed, expecting resource (see https://psalm.dev/030)

src/EventLoop/Driver/StreamSelectDriver.php:256:32: MixedArgumentTypeCoercion: Argument 1 of set_error_handler expects callable[impure](int, string, string=, int=, array<array-key, mixed>=):bool|null, but parent type Closure[impure] provided (see https://psalm.dev/194)

examples/benchmark-timers-delay.php:13:29: MixedArgumentTypeCoercion: Argument 2 of Revolt\EventLoop::delay expects Closure[impure](string):void, but parent type Closure[impure] provided (see https://psalm.dev/194)

examples/benchmark-ticks-delay.php:13:26: MixedArgumentTypeCoercion: Argument 1 of Revolt\EventLoop::defer expects Closure[impure](string):void, but parent type Closure[impure] provided (see https://psalm.dev/194)

examples/benchmark-memory.php:28:21: MixedMethodCall: Cannot call constructor on an unknown class (see https://psalm.dev/015)