Upgrade PHP dependencies and move to GH Actions for CI

.github/dependabot.yml

@@ -0,0 +1,8 @@
+version: 2
+updates:
+- package-ecosystem: composer
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "21:00"
+  open-pull-requests-limit: 10

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    strategy:
+      matrix:
+        os: [ ubuntu-latest ]
+        php: [ '7.3', '7.4', '8.0', '8.1', '8.2', '8.3' ]
+        include:
+          - os: macos-latest
+            php: '8.3'
+          - os: windows-latest
+            php: '8.3'
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v1
+
+    - name: Set up PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{matrix.php}}
+        extensions: fileinfo, json, pdo, mbstring
+
+    - name: Install
+      run: |
+        composer install
+
+    - name: Test
+      run: |
+        composer test

composer.json

@@ -16,8 +16,8 @@
     },
     "require": {
         "krinkle/intuition": "^2.1",
-        "samwilson/phpflickr": "^4.7",
-        "symfony/console": "^4.2|^5.0",
+        "samwilson/phpflickr": "^5",
+        "symfony/console": "^4.2|^5|^6|^7",
         "symfony/yaml": "^4.2|^5.0",
         "symfony/filesystem": "^4.2|^5.0",
         "twig/twig": "^3.0",
@@ -27,6 +27,19 @@
         "mediawiki/minus-x": "^1.0",
         "phpunit/phpunit": "^7.0|^8.0",
         "symfony/var-dumper": "^5.0",
-        "opsway/psr12-strict-coding-standard": "^0.3.0"
+        "opsway/psr12-strict-coding-standard": "^1"
+    },
+    "scripts": {
+        "test": [
+                "composer validate",
+                "minus-x check . -q",
+                "phpcs -sp",
+                "git status | grep 'nothing to commit, working tree clean'"
+        ]
+    },
+    "config": {
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        }
     }
 }