Bump network proxy to 0.31.1

Author: cheftako

registry.k8s.io/images/k8s-staging-kas-network-proxy/images.yaml

@@ -58,6 +58,7 @@
     "sha256:9a44a615d53d20d1ea5dbf407a65146e2a5263dd039b48e7f238b60ce063d3eb": ["v0.30.2"]
     "sha256:3f10d2a850145af5ffae6cce31f0385ce9c7a1e13765a3132a776db3995ba9e0": ["v0.30.3"]
     "sha256:a61124c6a86c3a2e1212858a4d82958f727e1bca4fb7e324fde2e7b16f0c6c15": ["v0.31.0"]
+    "sha256:480b86d32551ed97b554910529c611344215eb4dd690f669cbe8e673be136b90": ["v0.31.1"]
 - name: proxy-server
   dmap:
     "sha256:5431119507b1da03ead713e5cfd79b7231d38026bb97189e5bd76d252f91fc3f": ["v0.0.4"]
@@ -118,3 +119,4 @@
     "sha256:f2604735ebfccbd6f9961b1e4e15474571704640dc865326b7e8998557a0a294": ["v0.30.2"]
     "sha256:4b784b905eb22a9eaae45e235930845510cc5115fc9f59f30c0ac7b4b4b580b7": ["v0.30.3"]
     "sha256:89932c0b3f4bb0d14a2faa6e832cbb665bb83d6953b83b7bf365833f4907e3a6": ["v0.31.0"]
+    "sha256:fd5e02a482fc156e9a5ec7923ca94e372f0c7f61bda76d055c4786ba557ddc78": ["v0.31.1"]