fix schemaVersion regex not matching for complete attribute value

src/main/java/io/openepcis/convert/AttributePreScanUtil.java

@@ -8,7 +8,7 @@
 
 public class AttributePreScanUtil {
 
-  private static final String SCHEMA_VERSION_REGEX ="schemaVersion\"?'?\\s*[=:]\\s*([\"'])?([^\"']*)";
+  private static final String SCHEMA_VERSION_REGEX ="schemaVersion\"?'?\\s*[=:]\\s*([\"'])?([^\"']*)[\"?'?]";
   private static final Pattern SCHEMA_VERSION_PATTERN = Pattern.compile(SCHEMA_VERSION_REGEX);
   private static final int READ_LIMIT = 4096;
   public static final String scanSchemaVersion(final BufferedInputStream input) throws IOException {

src/test/java/com/io/openepcis/version/VersionDetectorTest.java

@@ -0,0 +1,38 @@
+package com.io.openepcis.version;
+
+import io.openepcis.constants.EPCISVersion;
+import io.openepcis.convert.VersionTransformer;
+import io.openepcis.resources.util.Commons;
+import jakarta.xml.bind.JAXBException;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.io.BufferedInputStream;
+import java.io.IOException;
+
+public class VersionDetectorTest {
+  private final VersionTransformer versionTransformer;
+
+  public VersionDetectorTest() throws JAXBException {
+    versionTransformer = new VersionTransformer();
+  }
+
+  @Test
+  void testJSON_2_0_0() throws IOException {
+    final EPCISVersion version = versionTransformer.versionDetector(new BufferedInputStream(Commons.getInputStream("2.0/EPCIS/JSON/Capture/Documents/Combination_of_different_event.json")));
+    Assertions.assertEquals(EPCISVersion.VERSION_2_0_0, version);
+  }
+
+  @Test
+  void testXML_2_0_0() throws IOException {
+    final EPCISVersion version = versionTransformer.versionDetector(new BufferedInputStream(Commons.getInputStream("2.0/EPCIS/XML/Capture/Documents/Combination_of_different_event.xml")));
+    Assertions.assertEquals(EPCISVersion.VERSION_2_0_0, version);
+  }
+
+  @Test
+  void testXML_1_2_0() throws IOException {
+    final EPCISVersion version = versionTransformer.versionDetector(new BufferedInputStream(Commons.getInputStream("1.2/EPCIS/XML/Capture/Documents/ObjectEvent.xml")));
+    Assertions.assertEquals(EPCISVersion.VERSION_1_2_0, version);
+  }
+  // new String(Commons.getInputStream("2.0/EPCIS/JSON/Capture/Documents/Combination_of_different_event.json").readAllBytes(), StandardCharsets.UTF_8);
+}