Update dependencies and code

.github/workflows/php.yml

@@ -2,35 +2,38 @@ name: Build
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, '*' ]
   pull_request:
     branches: [ main ]
+  schedule:
+    - cron: '0 0 1 */6 *' # Run at midnight on the first day every 6 months.
 
 jobs:
   build:
     runs-on: ubuntu-latest
     strategy:
       matrix: 
-        php-versions: ["7.2", "7.3", "7.4"]
+        php-versions: ["8.1", "8.2"]
 
     name: PHP ${{ matrix.php-versions }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php-versions }}
-          coverage: xdebug        
+          coverage: pcov
           tools: phpunit
 
       - name: Get composer cache directory
         id: composercache
-        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+        run: |
+          echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: ${{ steps.composercache.outputs.dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
@@ -43,7 +46,7 @@ jobs:
         run: composer test
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v3
         with:
           file: ./clover.xml
           fail_ci_if_error: true

.gitignore

@@ -1,3 +1,4 @@
 .idea
 vendor/
 clover.xml
+.phpunit.result.cache

composer.json

@@ -4,11 +4,11 @@
   "type": "library",
   "license": "MIT",
   "require": {
-    "easyrdf/easyrdf": "^0.10-dev",
+    "easyrdf/easyrdf": "^1.1.1",
     "ml/json-ld": "^1.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^6.5",
+    "phpunit/phpunit": "^10.2",
     "squizlabs/php_codesniffer": "^3.2"
   },
   "autoload": {