feat: Update Lowkey Vault module (#148)

- Set more specific category
- Add logo
- Add Java variant of the module

Signed-off-by: Esta Nagy <[email protected]>

Author: nagyesta

modules/lowkey-vault/index.md

@@ -1,15 +1,34 @@
 ---
 title: Lowkey Vault
 categories:
-  - other
+  - cloud
 docs:
+  - id: java
+    url: https://github.com/nagyesta/lowkey-vault/tree/main/lowkey-vault-testcontainers
+    maintainer: community
+    example: |
+      ```java
+      var lowkeyVault = LowkeyVaultContainerBuilder
+        .lowkeyVault("nagyesta/lowkey-vault:4.0.0-ubi9-minimal")
+        .build();
+      lowkeyVault.start();
+      ```
+    installation: |
+      ```xml
+      <dependency>
+          <groupId>com.github.nagyesta.lowkey-vault</groupId>
+          <artifactId>lowkey-vault-testcontainers</artifactId>
+          <version>RELEASE</version>
+          <scope>test</scope>
+      </dependency>
+      ```
   - id: dotnet
     url: https://www.nuget.org/packages/Testcontainers.LowkeyVault
     maintainer: core
     example: |
       ```csharp
       var lowkeyVaultContainer = new LowkeyVaultBuilder()
-        .WithImage("nagyesta/lowkey-vault:2.7.1-ubi9-minimal")
+        .WithImage("nagyesta/lowkey-vault:4.0.0-ubi9-minimal")
         .Build();
       await lowkeyVaultContainer.StartAsync();
       ```