Fix value conversion for `CONFIG GET`. (#2381) #6659

Job	Run time
get-matrices	3s
lint	1m 15s
get-containers	0s
Running Module Tests	0s
test-python-container	0s
test-python (3.9, valkey, 8.0, always, ubuntu, linux, ubuntu-latest, x64, x86_64-unknown-linux-gn...	20m 53s
test-python (3.9, redis, 6.2, always, ubuntu, linux, ubuntu-latest, x64, x86_64-unknown-linux-gnu...	18m 15s
test-python (3.13, valkey, 8.0, always, ubuntu, linux, ubuntu-latest, x64, x86_64-unknown-linux-g...	21m 14s
test-python (3.13, redis, 6.2, always, ubuntu, linux, ubuntu-latest, x64, x86_64-unknown-linux-gn...	18m 9s
test-pubsub-python (3.9, valkey, 8.0, always, ubuntu, linux, ubuntu-latest, x64, x86_64-unknown-l...	8m 33s
test-pubsub-python (3.9, redis, 6.2, always, ubuntu, linux, ubuntu-latest, x64, x86_64-unknown-li...	6m 15s
test-pubsub-python (3.13, valkey, 8.0, always, ubuntu, linux, ubuntu-latest, x64, x86_64-unknown-...	8m 40s
test-pubsub-python (3.13, redis, 6.2, always, ubuntu, linux, ubuntu-latest, x64, x86_64-unknown-l...	6m 9s
	1h 49m 26s

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