ci: pin tracing-core to 0.1.33

to fix a CI failure when testing the MSRV.

Author: ValuedMammal

ci/pin-msrv.sh

@@ -27,3 +27,4 @@ cargo update -p ring --precise "0.17.12"
 cargo update -p once_cell --precise "1.20.3"
 cargo update -p base64ct --precise "1.6.0"
 cargo update -p minreq --precise "2.13.2"
+cargo update -p tracing-core --precise "0.1.33"