Bump vimeo/psalm from 4.8.1 to 4.9.3

Bumps [vimeo/psalm](https://github.com/vimeo/psalm) from 4.8.1 to 4.9.3.
- [Release notes](https://github.com/vimeo/psalm/releases)
- [Commits](https://github.com/vimeo/psalm/compare/4.8.1...4.9.3)

---
updated-dependencies:
- dependency-name: vimeo/psalm
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

composer.lock

@@ -111,27 +111,27 @@
     "packages-dev": [
         {
             "name": "amphp/amp",
-            "version": "v2.5.2",
+            "version": "v2.6.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/amphp/amp.git",
-                "reference": "efca2b32a7580087adb8aabbff6be1dc1bb924a9"
+                "reference": "caa95edeb1ca1bf7532e9118ede4a3c3126408cc"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/amphp/amp/zipball/efca2b32a7580087adb8aabbff6be1dc1bb924a9",
-                "reference": "efca2b32a7580087adb8aabbff6be1dc1bb924a9",
+                "url": "https://api.github.com/repos/amphp/amp/zipball/caa95edeb1ca1bf7532e9118ede4a3c3126408cc",
+                "reference": "caa95edeb1ca1bf7532e9118ede4a3c3126408cc",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7"
+                "php": ">=7.1"
             },
             "require-dev": {
                 "amphp/php-cs-fixer-config": "dev-master",
                 "amphp/phpunit-util": "^1",
                 "ext-json": "*",
                 "jetbrains/phpstorm-stubs": "^2019.3",
-                "phpunit/phpunit": "^6.0.9 | ^7",
+                "phpunit/phpunit": "^7 | ^8 | ^9",
                 "psalm/phar": "^3.11@dev",
                 "react/promise": "^2"
             },
@@ -188,7 +188,7 @@
             "support": {
                 "irc": "irc://irc.freenode.org/amphp",
                 "issues": "https://github.com/amphp/amp/issues",
-                "source": "https://github.com/amphp/amp/tree/v2.5.2"
+                "source": "https://github.com/amphp/amp/tree/v2.6.0"
             },
             "funding": [
                 {
@@ -196,7 +196,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-01-10T17:06:37+00:00"
+            "time": "2021-07-16T20:06:06+00:00"
         },
         {
             "name": "amphp/byte-stream",
@@ -5278,16 +5278,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "4.8.1",
+            "version": "4.9.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "f73f2299dbc59a3e6c4d66cff4605176e728ee69"
+                "reference": "4c262932602b9bbab5020863d1eb22d49de0dbf4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/f73f2299dbc59a3e6c4d66cff4605176e728ee69",
-                "reference": "f73f2299dbc59a3e6c4d66cff4605176e728ee69",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/4c262932602b9bbab5020863d1eb22d49de0dbf4",
+                "reference": "4c262932602b9bbab5020863d1eb22d49de0dbf4",
                 "shasum": ""
             },
             "require": {
@@ -5306,7 +5306,7 @@
                 "felixfbecker/advanced-json-rpc": "^3.0.3",
                 "felixfbecker/language-server-protocol": "^1.5",
                 "netresearch/jsonmapper": "^1.0 || ^2.0 || ^3.0 || ^4.0",
-                "nikic/php-parser": "^4.10.5",
+                "nikic/php-parser": "^4.12",
                 "openlss/lib-array2xml": "^1.0",
                 "php": "^7.1|^8",
                 "sebastian/diff": "^3.0 || ^4.0",
@@ -5329,7 +5329,6 @@
                 "slevomat/coding-standard": "^7.0",
                 "squizlabs/php_codesniffer": "^3.5",
                 "symfony/process": "^4.3 || ^5.0",
-                "weirdan/phpunit-appveyor-reporter": "^1.0.0",
                 "weirdan/prophecy-shim": "^1.0 || ^2.0"
             },
             "suggest": {
@@ -5377,9 +5376,9 @@
             ],
             "support": {
                 "issues": "https://github.com/vimeo/psalm/issues",
-                "source": "https://github.com/vimeo/psalm/tree/4.8.1"
+                "source": "https://github.com/vimeo/psalm/tree/4.9.3"
             },
-            "time": "2021-06-20T23:03:20+00:00"
+            "time": "2021-08-14T16:19:38+00:00"
         },
         {
             "name": "webmozart/assert",