[Test failure] IO error with TLS

[madolson]

https://github.com/valkey-io/valkey/actions/runs/10127360669/job/28005047625

We see an IO error in the test_slave_buffers test which appears to be a legit error

=== (external:skip cluster) Starting server 127.0.0.1:26643 ok
[exception]: Executing test client: I/O error reading reply.
I/O error reading reply
    while executing
"$rd_master setrange key:0 0 [string repeat A $payload_len]"
    ("uplevel" body line 53)
    invoked from within
"uplevel 1 $code"
    (procedure "test" line 58)
    invoked from within
"test "$test_name" {
            set slave [srv 0 client]
            set slave_host [srv 0 host]
            set slave_port [srv 0 port]
            s..."
    ("uplevel" body line 3)
    invoked from within
"uplevel 1 $code "
    (procedure "start_server" line 2)
    invoked from within
"start_server {} {
        set slave_pid [s process_id]
        test "$test_name" {
            set slave [srv 0 client]
            set slave_host [sr..."
    ("uplevel" body line 2)
    invoked from within
"uplevel 1 $code "
    (procedure "start_server" line 2)
    invoked from within
"start_server {tags {"maxmemory external:skip"}} {
        start_server {} {
        set slave_pid [s process_id]
        test "$test_name" {
         ..."
    (procedure "test_slave_buffers" line 2)
    invoked from within
"test_slave_buffers {slave buffer are counted correctly} 1000000 10 0 1"
    (file "tests/unit/maxmemory.tcl" line 427)
    invoked from within
"source $path"
    (procedure "execute_test_file" line 4)
    invoked from within
"execute_test_file $data"
    (procedure "test_client_main" line 10)
    invoked from within
"test_client_main $::test_server_port "

This might be just a flaky test. It looks like the client might be getting evicted or something.