Update dependencies and maven plugins

Author: miguno

pom.xml

@@ -69,10 +69,10 @@
         <maven-surefire-plugin.version>3.5.6</maven-surefire-plugin.version>
         <git-build-hook-maven-plugin.version>3.6.0</git-build-hook-maven-plugin.version>
         <jacoco.version>0.8.15</jacoco.version>
-        <spotbugs.version>4.10.1</spotbugs.version>
-        <spotbugs-maven-plugin.version>4.9.8.3</spotbugs-maven-plugin.version>
+        <spotbugs.version>4.10.3</spotbugs.version>
+        <spotbugs-maven-plugin.version>4.10.3.0</spotbugs-maven-plugin.version>
         <findsecbugs.version>1.14.0</findsecbugs.version> <!-- spotbugs plugin for security audits of web apps -->
-        <spotless.version>3.6.0</spotless.version>
+        <spotless.version>3.9.0</spotless.version>
         <therapi.version>0.15.0</therapi.version>
         <!-- Test-related settings -->
         <skipTests>false</skipTests>    <!-- To skip all tests with `-DskipTests` on CLI. -->