Update .gitattributes

Author: tvdijen

.gitattributes

@@ -8,7 +8,9 @@ codecov.yml export-ignore
 phpcs.xml export-ignore
 phpunit.xml export-ignore
 phpunit-interoperability.xml export-ignore
-psalm.xml export-ignore
-psalm-dev.xml export-ignore
+phpstan-baseline.neon export-ignore
+phpstan-baseline-dev.neon export-ignore
+phpstan.neon export-ignore
+phpstan-dev.neon export-ignore
 README-DEV.md export-ignore
 UPGRADING.md export-ignore