Update to Java 17 (#83)

.classpath

@@ -6,7 +6,7 @@
 			<attribute name="gradle_used_by_scope" value="main,test"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11/"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17/"/>
 	<classpathentry kind="con" path="org.eclipse.buildship.core.gradleclasspathcontainer"/>
 	<classpathentry kind="output" path="bin/default"/>
 </classpath>

.github/workflows/build.yml

@@ -3,7 +3,7 @@ name: Build
 on: [push, fork, pull_request]
 
 env:
-  JAVA_VERSION: 1.11
+  JAVA_VERSION: 1.17
   GRADLE_VERSION: 8.4
 
 jobs:   

.github/workflows/build_release.yml

@@ -10,7 +10,7 @@ permissions:
   id-token: write
 
 env:
-  JAVA_VERSION: 1.11
+  JAVA_VERSION: 1.17
   GRADLE_VERSION: 8.4
 
 jobs:

.travis.yml

@@ -1,3 +1,3 @@
 language: java
 jdk:
-- openjdk11
+- openjdk17

build.gradle

@@ -15,8 +15,8 @@ plugins {
 group = 'com.stuypulse'
 
 java {
-   sourceCompatibility = JavaVersion.VERSION_11
-   targetCompatibility = JavaVersion.VERSION_11
+   sourceCompatibility = JavaVersion.VERSION_17
+   targetCompatibility = JavaVersion.VERSION_17
 }
 
 sourceSets {