fix version-file encoding (#1733)

Author: EddeCCC

inspectit-ocelot-agent/src/main/java/rocks/inspectit/ocelot/agent/AgentJars.java

@@ -6,6 +6,7 @@
 import java.nio.channels.FileChannel;
 import java.nio.channels.FileLock;
 import java.nio.channels.OverlappingFileLockException;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -226,7 +227,7 @@ private static boolean isRecyclingEnabled() {
     private static String getAgentVersion() {
         if(agentVersion == null) {
             try (InputStream is = AgentJars.class.getResourceAsStream(AGENT_VERSION_INFORMATION_FILE)) {
-                BufferedReader reader = new BufferedReader(new InputStreamReader(is));
+                BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
                 agentVersion = reader.readLine();
             } catch (Exception e) {
                 System.err.println("Could not read agent version information file");

inspectit-ocelot-core/src/main/java/rocks/inspectit/ocelot/core/AgentImpl.java

@@ -18,6 +18,7 @@
 import java.io.InputStreamReader;
 import java.lang.instrument.Instrumentation;
 import java.net.URLClassLoader;
+import java.nio.charset.StandardCharsets;
 import java.util.Optional;
 
 /**
@@ -124,7 +125,7 @@ private void logOpenTelemetryClassLoader() {
      */
     private void readVersionInformation() {
         try (InputStream inputStream = AgentImpl.class.getResourceAsStream(AGENT_VERSION_INFORMATION_FILE)) {
-            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
+            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
             agentVersion = reader.readLine();
             openTelemetryVersion = reader.readLine();
             agentBuildDate = reader.readLine();