Upgrade machine-controller-manager

from v0.48.1 to v0.48.2

Author: gardener-robot-ci-3

charts/images.yaml

@@ -172,7 +172,7 @@ images:
 - name: machine-controller-manager
   sourceRepository: github.com/gardener/machine-controller-manager
   repository: eu.gcr.io/gardener-project/gardener/machine-controller-manager
-  tag: "v0.48.1"
+  tag: "v0.48.2"
   labels:
   - name: 'gardener.cloud/cve-categorisation'
     value: