Fix URI decode (testcontainers#9026)

Author: simpletasks

core/src/jarFileTest/java/org/testcontainers/AbstractJarFileTest.java

@@ -1,6 +1,8 @@
 package org.testcontainers;
 
 import java.net.URI;
+import java.net.URLDecoder;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.FileSystem;
 import java.nio.file.FileSystems;
 import java.nio.file.Path;
@@ -14,7 +16,8 @@ public abstract class AbstractJarFileTest {
     static {
         try {
             Path jarFilePath = Paths.get(System.getProperty("jarFile"));
-            URI jarFileUri = new URI("jar", jarFilePath.toUri().toString(), null);
+            String decodedPath = URLDecoder.decode(jarFilePath.toUri().toString(), StandardCharsets.UTF_8.name());
+            URI jarFileUri = new URI("jar", decodedPath, null);
             FileSystem fileSystem = FileSystems.newFileSystem(jarFileUri, Collections.emptyMap());
             root = fileSystem.getPath("/");
         } catch (Exception e) {