Update PHPStan packages to v2

.changes/unreleased/Release-renovate-1791597787102.yaml

@@ -1,7 +0,0 @@
-kind: Release
-body: |
-  - docker.elastic.co/logstash/logstash-oss: 8.1.0-amd64 ->  8.19.23-amd64
-
-time: 2026-10-10T02:03:07+00:00
-custom:
-  Issue: ""

.changes/unreleased/Release-renovate-1791601339443.yaml

@@ -0,0 +1,13 @@
+kind: Release
+body: |
+  - jangregor/phpstan-prophecy: ^1.0 ->  ^2.0
+  - phpstan/phpstan: ^1.10 ->  ^2.0
+  - phpstan/phpstan-deprecation-rules: ^1.1 ->  ^2.0
+  - phpstan/phpstan-doctrine: ^1.3 ->  ^2.0
+  - phpstan/phpstan-phpunit: ^1.3 ->  ^2.0
+  - phpstan/phpstan-strict-rules: ^1.5 ->  ^2.0
+  - phpstan/phpstan-symfony: ^1.3 ->  ^2.0
+
+time: 2026-10-10T03:02:19+00:00
+custom:
+  Issue: ""

composer.json

@@ -37,15 +37,15 @@
     "symfony/var-dumper": "4.*",
     "symfony/phpunit-bridge": "^5.2",
     "phpspec/prophecy-phpunit": "^2.0",
-    "phpstan/phpstan": "^1.10",
-    "phpstan/phpstan-deprecation-rules": "^1.1",
+    "phpstan/phpstan": "^2.0",
+    "phpstan/phpstan-deprecation-rules": "^2.0",
     "phpstan/extension-installer": "^1.2",
-    "phpstan/phpstan-strict-rules": "^1.5",
+    "phpstan/phpstan-strict-rules": "^2.0",
     "rector/rector": "^1.2",
-    "phpstan/phpstan-doctrine": "^1.3",
-    "phpstan/phpstan-symfony": "^1.3",
-    "phpstan/phpstan-phpunit": "^1.3",
-    "jangregor/phpstan-prophecy": "^1.0",
+    "phpstan/phpstan-doctrine": "^2.0",
+    "phpstan/phpstan-symfony": "^2.0",
+    "phpstan/phpstan-phpunit": "^2.0",
+    "jangregor/phpstan-prophecy": "^2.0",
     "symfony/debug-bundle": "^5.4"
   },
   "minimum-stability": "dev",

docker/logstash/Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.elastic.co/logstash/logstash-oss:8.19.23-amd64@sha256:ff75c74eb5c11e570a5038f8dfbb1561c4ba0d5fe78ac3744a0d41206014fbe4
+FROM docker.elastic.co/logstash/logstash-oss:8.1.0-amd64
 
 RUN \
   bin/logstash-plugin install logstash-output-gelf \