also get it from versioninfo if fails

Author: l-trotta

java-client/src/main-flavored/java/co/elastic/clients/transport/VersionInfo.java

@@ -22,5 +22,5 @@
 // Package private
 class VersionInfo {
     static final String FLAVOR = "stack";
-    static final String VERSION = "8.11.0";
+    static final String VERSION = "8.15.0";
 }

java-client/src/main/java/co/elastic/clients/transport/Version.java

@@ -159,7 +159,8 @@ public String toString() {
         try(BufferedReader vsReader = new BufferedReader(new FileReader(path.toFile()))) {
             version = Version.parse(vsReader.readLine());
         } catch (Exception e) {
-            // Failed to parse version
+            // Failed to parse version from file, trying from VersionInfo
+            version = Version.parse(VersionInfo.VERSION);
         }
         VERSION = version;
     }