test: update CAPA to 0.6.4

This PR pulls in an updated cluster api aws version, ensuring the CRDs
are closer to what's expected when we patch the CAPA image later in the
setup. We will eventually move to 0.6.5 as soon as it's cut.

Signed-off-by: Spencer Smith <robertspencersmith@gmail.com>

hack/test/e2e-capi.sh

@@ -6,7 +6,7 @@ source ./hack/test/e2e.sh
 
 export CABPT_VERSION="0.2.0-alpha.10"
 export CACPPT_VERSION="0.1.0-alpha.11"
-export CAPA_VERSION="0.5.4"
+export CAPA_VERSION="0.6.4"
 export CAPG_VERSION="0.3.0"
 
 # We need to override this here since e2e.sh will set it to ${TMP}/capi/kubeconfig.