chore: Update php version in psalm.xml and composer.json

Signed-off-by: Louis Chemineau <louis@chmn.me>

Author: artonge

composer.json

@@ -6,7 +6,7 @@
 		"optimize-autoloader": true,
 		"classmap-authoritative": true,
 		"platform": {
-			"php": "8.1"
+			"php": "8.3"
 		},
 		"sort-packages": true,
 		"allow-plugins": {

psalm.xml

@@ -6,7 +6,8 @@
 	xmlns="https://getpsalm.org/schema/config"
 	xsi:schemaLocation="https://getpsalm.org/schema/config https://getpsalm.org/schema/config"
 	errorBaseline="tests/psalm-baseline.xml"
-	autoloader="vendor-bin/psalm/vendor/autoload.php">
+	autoloader="vendor-bin/psalm/vendor/autoload.php"
+	phpVersion="8.3">
 	<projectFiles>
 		<directory name="lib" />
 		<ignoreFiles>
@@ -57,4 +58,4 @@
 		<file name="tests/stubs/oca_viewer_event.php" preloadClasses="true" />
 		<file name="tests/stubs/oca_theming_defaults.php" preloadClasses="true" />
 	</stubs>
-</psalm>
+</psalm>