KNOX-2107 - Upgrade spring-vault to 2.2.0.RELEASE

Signed-off-by: Kevin Risden <krisden@apache.org>
diff --git a/pom.xml b/pom.xml
index c8aa3ef..fe1e762 100644
--- a/pom.xml
+++ b/pom.xml
@@ -239,7 +239,7 @@
         <spotbugs.version>3.1.12</spotbugs.version>
         <spotbugs-maven-plugin.version>3.1.12.2</spotbugs-maven-plugin.version>
         <spring-core.version>5.2.1.RELEASE</spring-core.version>
-        <spring-vault.version>2.1.4.RELEASE</spring-vault.version>
+        <spring-vault.version>2.2.0.RELEASE</spring-vault.version>
         <stax2-api.version>4.2</stax2-api.version>
         <taglibs-standard.version>1.2.5</taglibs-standard.version>
         <testcontainers.version>1.12.1</testcontainers.version>