Update test TestTLSEditSettings to use the supported TLS version

Error Messagetimeout: admission webhook "couchbase-operator-admission.default.svc" denied the request: validation failure list:

tls1.0 and tls1.1 are not supported for Couchbase 7.6.0+Stacktracegoroutine 181 [running]:

runtime/debug.Stack()

	runtime/debug/stack.go:24 +0x67

github.com/couchbase/couchbase-operator/test/e2e/e2eutil.Die(0xc000976820, {0x72e3c00, 0xc0005822a0})

	github.com/couchbase/couchbase-operator/test/e2e/e2eutil/util.go:1456 +0x30

github.com/couchbase/couchbase-operator/test/e2e/e2eutil.MustPatchCluster(0xc000976820, 0xc000d7c0e0, 0xc0000e9708, {0x7314600, 0xc00062ee40}, 0xdf8475800)

	github.com/couchbase/couchbase-operator/test/e2e/e2eutil/util.go:906 +0x68

github.com/couchbase/couchbase-operator/test/e2e.TestTLSEditSettings(0xc000976820)

	github.com/couchbase/couchbase-operator/test/e2e/tls_test.go:1654 +0xdea

testing.tRunner(0xc000976820, 0x58ac860)

	testing/testing.go:1689 +0x21f

created by testing.(*T).Run in goroutine 178

	testing/testing.go:1742 +0x826