Update humility-probes-core digest to 00c4db9

Author: renovate[bot]

Cargo.lock

@@ -36,7 +36,7 @@ hubpack = "0.1"
 humility-core = { git =  "https://github.com/oxidecomputer/humility" , rev = "9eb263bf2563dc2c5ae3a1678969774d1d4374b9" }
 humility-hiffy = { git =  "https://github.com/oxidecomputer/humility" , rev = "9eb263bf2563dc2c5ae3a1678969774d1d4374b9" }
 humility-idol = { git =  "https://github.com/oxidecomputer/humility", rev = "9eb263bf2563dc2c5ae3a1678969774d1d4374b9" }
-humility-probes-core = { git =  "https://github.com/oxidecomputer/humility", rev = "9eb263bf2563dc2c5ae3a1678969774d1d4374b9" }
+humility-probes-core = { git =  "https://github.com/oxidecomputer/humility", rev = "00c4db9ac40b8a480eab7f1a3a6b7a0847807c2e" }
 knus = "3.4.0"
 libipcc = { git = "https://github.com/oxidecomputer/ipcc-rs", rev = "91f8c989f1cdc29c56720ab7663afdcaf5a96b72" }
 log = { version = "0.4.33", features = ["std"] }