Bump vault-java-driver from 4.0.0 to 5.0.0 in /modules/vault (#2019)

Bumps [vault-java-driver](https://github.com/BetterCloud/vault-java-driver) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/BetterCloud/vault-java-driver/releases)
- [Commits](BetterCloud/vault-java-driver@v4.0.0...v5.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: null <27856297+dependabot-preview[bot]@users.noreply.github.com>

modules/vault/build.gradle

@@ -3,7 +3,7 @@ description = "Testcontainers :: Vault"
 dependencies {
     compile project(':testcontainers')
 
-    testCompile 'com.bettercloud:vault-java-driver:4.0.0'
+    testCompile 'com.bettercloud:vault-java-driver:5.0.0'
     testCompile 'io.rest-assured:rest-assured:4.1.2'
     testCompile 'org.assertj:assertj-core:3.14.0'