Use bitnami/openldap in integration tests instead of our old fork

test/deploy/tools/proxy.yaml

@@ -1,4 +1,4 @@
-#! Copyright 2020-2021 the Pinniped contributors. All Rights Reserved.
+#! Copyright 2020-2023 the Pinniped contributors. All Rights Reserved.
 #! SPDX-License-Identifier: Apache-2.0
 
 #@ load("@ytt:data", "data")
@@ -30,13 +30,6 @@ spec:
           ports:
           - name: http
             containerPort: 3128
-          resources:
-            requests:
-              cpu: "100m" #! one-tenth of one CPU
-              memory: "64Mi"
-            limits:
-              cpu: "100m" #! one-tenth of one CPU
-              memory: "64Mi"
           volumeMounts:
             - name: log-dir
               mountPath: "/var/log/squid/"