fix(ci): pin tracing-attributes for msrv

Author: LagginTimes

ci/pin-msrv.sh

@@ -29,3 +29,4 @@ 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"
 cargo update -p webpki-roots@1.0.2 --precise "1.0.1"
+cargo update -p tracing-attributes --precise "0.1.28"