ci(MSP-5160): add PHP 8.6 to the CI matrix (#703)

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

Author: maks-rafalko

.github/workflows/ci.yml

@@ -12,8 +12,11 @@ jobs:
   ci:
     name: "Execute"
     runs-on: ${{ matrix.operating-system }}
+    # PHP 8.6 is a nightly/pre-release build until GA, so its legs must not block merges.
+    continue-on-error: ${{ matrix.php-version == '8.6' }}
 
     strategy:
+      fail-fast: false
       matrix:
         dependencies:
           - "lowest"
@@ -22,6 +25,7 @@ jobs:
         php-version:
           - "8.4"
           - "8.5"
+          - "8.6"
         operating-system:
           - "ubuntu-latest"
 

composer.json

@@ -31,7 +31,8 @@
     "phpstan/phpstan-phpunit": "^2.0.18",
     "phpstan/phpstan-strict-rules": "^2.0.12",
     "phpunit/phpunit": "^13.2.6",
-    "rector/rector": "^2.5.8"
+    "rector/rector": "^2.5.8",
+    "thecodingmachine/safe": "^3.4.0"
   },
   "config": {
     "bin-dir": "bin",

composer.lock

@@ -101,7 +101,7 @@ public static function provideEmptyStructures(): iterable
     public function it_throws_when_deserializing_if_an_error_encountered(): void
     {
         $this->expectException(DeserializationFailed::class);
-        $this->expectExceptionMessageIs('Failed to deserialize data from JSON. Error code: 4, error message: Syntax error.');
+        $this->expectExceptionMessageMatches('/^Failed to deserialize data from JSON\. Error code: 4, error message: Syntax error(?: near location \d+:\d+)?\.$/');
 
         $this->serializer->deserialize('{"unclosed":"bad","object":"json"');
     }
@@ -118,7 +118,7 @@ public function it_can_deserialize_json_nested_to_the_maximum_supported_depth():
     public function it_throws_when_deserializing_json_nested_beyond_the_maximum_supported_depth(): void
     {
         $this->expectException(DeserializationFailed::class);
-        $this->expectExceptionMessageIs('Failed to deserialize data from JSON. Error code: 1, error message: Maximum stack depth exceeded.');
+        $this->expectExceptionMessageMatches('/^Failed to deserialize data from JSON\. Error code: 1, error message: Maximum stack depth exceeded(?: near location \d+:\d+)?\.$/');
 
         $this->serializer->deserialize($this->nestedArrays(self::MAX_NESTING_DEPTH + 1));
     }