Update dependency com.github.spotbugs.snom:spotbugs-gradle-plugin to v6.4.8

Author: renovate[bot]

gradle/libs.versions.toml

@@ -16,7 +16,7 @@ nullawayVersion = "0.12.7"
 errorpronePluginVersion = "4.2.0"
 nullawayPluginVersion = "2.2.0"
 benmanesPluginVersion = "0.52.0"
-spotbugsPluginVersion = "6.2.0"
+spotbugsPluginVersion = "6.4.8"
 spotlessPluginVersion = "7.0.4"
 testKonvencePluginVersion = "1.0.8"
 shadowPluginVersion = "8.3.6"