Increase minimum PHP version to 8.1

.github/workflows/ci.yml

@@ -3,38 +3,13 @@ name: CI
 on: [push]
 
 jobs:
-  moderate:
-    name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}
-    runs-on: ${{ matrix.operating-system }}
-    strategy:
-      matrix:
-        operating-system: ['ubuntu-latest']
-        php-versions: ['7.1', '7.2', '7.3']
-        phpunit-versions: ['latest']
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: ${{ matrix.php-versions }}
-          extensions: gmp, mbstring, intl, sodium
-          ini-values: max_execution_time=180
-
-      - name: Install dependencies
-        run: composer install
-
-      - name: Test Suite
-        run: composer test
-
   modern:
     name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
         operating-system: ['ubuntu-latest']
-        php-versions: ['7.4', '8.0', '8.1']
+        php-versions: ['8.1']
         phpunit-versions: ['latest']
     steps:
       - name: Checkout

composer.json

@@ -23,11 +23,10 @@
     "ext-gmp": "*",
     "ext-json": "*",
     "ext-openssl": "*",
-    "php": "^7.1|^8",
+    "php": "^8.1",
     "paragonie/constant_time_encoding": "^2",
     "paragonie/easy-ecc": "^1",
-    "paragonie/sodium_compat": "^1.16",
-    "phpseclib/phpseclib": "^2"
+    "paragonie/sodium_compat": "^1.17"
   },
   "require-dev": {
     "phpunit/phpunit": "^6|^7|^8|^9",