Upgrade: SB 2.5.5 and Java 17

Author: mechero

pom.xml

@@ -14,14 +14,14 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.4.3</version>
+		<version>2.5.5</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>15</java.version>
+		<java.version>17</java.version>
 	</properties>
 
 	<dependencies>