update version matrix

Author: shubham-pampattiwar

README.md

@@ -52,22 +52,24 @@ specific use cases of using Velero with OCP. The `openshift` images tend to lag
 behind Velero upstream releases as we are more cautious about supporting older 
 versions. Here is the default mapping of versions:
 
-| OADP Version   | Velero Version |
-| :------------- |   -----------: |
-|  v0.1.1        | v1.4.1         |
-|  v0.1.2        | v1.4.2         |
-|  v0.1.3        | v1.4.2         |
-|  v0.1.4        | v1.4.2         |
-|  v0.2.0        | v1.5.2         |
-|  v0.2.1        | v1.5.2         |
-|  v0.2.3        | v1.6.0         |
-|  v0.2.4        | v1.6.0         |
-|  v0.2.5        | v1.6.0         |
-|  v0.2.6        | v1.6.0         |
-|  v0.3.0        | v1.6.2         |
-|  v0.4.0        | v1.7.0         |
-|  v0.5.0        | v1.7.0         |
-|  v0.5.1        | v1.7.1         |
-|  v0.5.2        | v1.7.1         |
-|  v0.5.3        | v1.7.1         |
+| OADP Version | Velero Version |
+|:-------------|   -----------: |
+| v0.1.1       | v1.4.1         |
+| v0.1.2       | v1.4.2         |
+| v0.1.3       | v1.4.2         |
+| v0.1.4       | v1.4.2         |
+| v0.2.0       | v1.5.2         |
+| v0.2.1       | v1.5.2         |
+| v0.2.3       | v1.6.0         |
+| v0.2.4       | v1.6.0         |
+| v0.2.5       | v1.6.0         |
+| v0.2.6       | v1.6.0         |
+| v0.3.0       | v1.6.2         |
+| v0.4.0       | v1.7.0         |
+| v0.5.0       | v1.7.0         |
+| v0.5.1       | v1.7.1         |
+| v0.5.2       | v1.7.1         |
+| v0.5.3       | v1.7.1         |
+| v0.5.4       | v1.7.1         |
+| v0.5.5       | v1.7.1         |