Make use of NIO StandardCharsets
diff --git a/rhelp/org.eclipse.statet.rhelp.server/src/main/java/org/eclipse/statet/internal/rhelp/server/renv/REnvConfigurationImpl.java b/rhelp/org.eclipse.statet.rhelp.server/src/main/java/org/eclipse/statet/internal/rhelp/server/renv/REnvConfigurationImpl.java
index e000fd9..17b8117 100644
--- a/rhelp/org.eclipse.statet.rhelp.server/src/main/java/org/eclipse/statet/internal/rhelp/server/renv/REnvConfigurationImpl.java
+++ b/rhelp/org.eclipse.statet.rhelp.server/src/main/java/org/eclipse/statet/internal/rhelp/server/renv/REnvConfigurationImpl.java
@@ -16,7 +16,7 @@
 
 import java.io.BufferedReader;
 import java.io.IOException;
-import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Properties;
@@ -42,7 +42,7 @@
 		final Properties p= new Properties();
 		final Path propertiesFile= stateDataRootDirectoryPath.resolve("renv.properties");
 		try (final BufferedReader reader= Files.newBufferedReader(propertiesFile,
-				Charset.forName("UTF-8") )) {
+				StandardCharsets.UTF_8 )) {
 			p.load(reader);
 		}
 		load(p);