Switch to Java 11

Author: jricher

pom.xml

@@ -7,9 +7,9 @@
 	<description>HTTP Message Signature implementaiton.</description>
 	<url>https://github.com/bspk/httpsig-java</url>
 	<properties>
-		<java.version>14</java.version>
-		<maven.compiler.source>14</maven.compiler.source>
-		<maven.compiler.target>14</maven.compiler.target>
+		<java.version>11</java.version>
+		<maven.compiler.source>11</maven.compiler.source>
+		<maven.compiler.target>11</maven.compiler.target>
 	</properties>
 	<scm>
 		<connection>scm:git:https://github.com/bspk/httpsig-java.git</connection>