Update WireMock to version 3.6.0 to allow use of the start() method

build.gradle

@@ -22,7 +22,7 @@ repositories {
 
 ext {
   versions = [
-      wiremock    : "3.5.2",
+      wiremock    : "3.6.0",
       jwt         : '4.4.0',
       jose4j      : '0.9.6',
   ]

src/main/java/org/wiremock/extension/jwt/JwtExtensionFactory.java

@@ -12,11 +12,9 @@ public class JwtExtensionFactory implements ExtensionFactory {
     public List<Extension> create(WireMockServices services) {
         final Admin admin = services.getAdmin();
         final JwtSigningKeySettings jwtSigningKeySettings = new JwtSigningKeySettings(admin);
-        final JwtInitialiser jwtInitialiser = new JwtInitialiser(jwtSigningKeySettings);
 
         return List.of(
                 jwtSigningKeySettings,
-                jwtInitialiser,
                 new JwtHelpersExtension(jwtSigningKeySettings)
         );
     }

src/main/java/org/wiremock/extension/jwt/JwtHelpersExtension.java

@@ -7,6 +7,7 @@
 public class JwtHelpersExtension implements TemplateHelperProviderExtension {
 
     private final JwtSigningKeySettings jwtSigningKeySettings;
+    private boolean initialised = false;
 
     public JwtHelpersExtension(JwtSigningKeySettings jwtSigningKeySettings) {
         this.jwtSigningKeySettings = jwtSigningKeySettings;
@@ -22,7 +23,23 @@ public Map<String, Helper<?>> provideTemplateHelpers() {
                 "jwks", jwksHandlebarsHelper
         );
     }
+
+    @Override
+    public void start() {
+        initialise();
+    }
 
+    private void initialise() {
+        if (!initialised) {
+            synchronized (this) {
+                if (!initialised) {
+                    jwtSigningKeySettings.initialise();
+                    initialised = true;
+                }
+            }
+        }
+    }
+
     @Override
     public String getName() {
         return "jwt-template-helpers";