Drop PHP 8.1, Upgrade Psalm to v6 and PHPUnit to v11

.gitattributes

@@ -20,3 +20,4 @@ phpunit.xml.dist export-ignore
 psalm.xml export-ignore
 psalm-baseline.xml export-ignore
 renovate.json export-ignore
+Makefile export-ignore

.github/workflows/continuous-integration.yml

@@ -7,7 +7,7 @@ on:
     tags:
 
 env:
-  default_php: "8.1"
+  default_php: "8.2"
   php_extensions: ""
 
 jobs:

.gitignore

@@ -3,3 +3,4 @@
 /.cache/
 !/.cache/.gitkeep
 phpunit.xml
+rector.php

Makefile

@@ -0,0 +1,61 @@
+# Run `make` (no arguments) to get a short description of what is available
+# within this `Makefile`.
+
+help: ## shows this help
+	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_\-\.]+:.*?## / {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
+.PHONY: help
+
+install: ## Install PHP dependencies
+	composer install
+.PHONY: install
+
+update: ## Update PHP dependencies
+	composer update
+.PHONY: update
+
+bump: ## Update PHP dependencies
+	composer update
+	composer bump -D
+	composer update
+.PHONY: update
+
+clean: ## Clear out caches
+	rm -rf .cache/code-coverage
+	rm -rf .cache/phpunit
+	rm -f .cache/phpcs.cache
+	rm -f .cache/test-results
+	rm -rf build
+	vendor/bin/psalm --clear-cache
+
+sa: ## Run static analysis checks
+	vendor/bin/psalm --no-cache --threads=1
+.PHONY: sa
+
+cs: ## Run coding standards checks
+	vendor/bin/phpcs
+.PHONY: cs
+
+test: ## Run unit tests
+	vendor/bin/phpunit
+.PHONY: test
+
+qa: cs sa test ## Run all QA Checks
+.PHONY: check
+
+get-rector: ## Install rector as a dev dependency
+ifeq (,$(wildcard ./vendor/bin/rector))
+	composer require --dev rector/rector
+endif
+.PHONY: get-rector
+
+remove-rector: ## Remove rector dependency
+	composer remove --dev rector/rector
+.PHONY: remove-rector
+
+rector: get-rector ## Run Rector
+	vendor/bin/rector
+.PHONY: rector
+
+mutants: test ## Run mutation tests
+	vendor/bin/infection --configuration=infection-custom.json
+.PHONY: mutants

composer.json

@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": "~8.1 || ~8.2.0 || ~8.3 || ~8.4",
+        "php": "~8.2.0 || ~8.3 || ~8.4",
         "ext-json": "*",
         "php-http/discovery": "^1.14.1",
         "psr/http-client": "^1.0",
@@ -25,19 +25,22 @@
     "require-dev": {
         "ext-curl": "*",
         "doctrine/coding-standard": "^12.0",
-        "infection/infection": "^0.27.11",
+        "infection/infection": "^0.29.10",
         "laminas/laminas-diactoros": "^3.5.0",
-        "php-http/curl-client": "^2.3.2",
-        "phpunit/phpunit": "^10.5.38",
-        "psalm/plugin-phpunit": "^0.19.0",
-        "react/child-process": "^0.6.5",
-        "react/http": "^1.10",
+        "php-http/curl-client": "^2.3.3",
+        "phpunit/phpunit": "^11.5.4",
+        "psalm/plugin-phpunit": "^0.19.2",
+        "react/child-process": "^0.6.6",
+        "react/http": "^1.11",
         "roave/security-advisories": "dev-latest",
-        "squizlabs/php_codesniffer": "^3.10.3",
-        "vimeo/psalm": "^5.26.1"
+        "squizlabs/php_codesniffer": "^3.11.3",
+        "vimeo/psalm": "^6.0.0"
     },
     "conflict": {
-        "php-http/httplug": "<2.4.1"
+        "php-http/httplug": "<2.4.1",
+        "shish/safe": "<2.6.4",
+        "sanmai/pipeline": "<6.12",
+        "symfony/options-resolver": "<7.2"
     },
     "config": {
         "sort-packages": true,
@@ -48,7 +51,7 @@
             "php-http/discovery": true
         },
         "platform": {
-            "php": "8.1.99"
+            "php": "8.2.99"
         }
     },
     "extra": {