ci: pin time crate in msrv

Author: robjtede

justfile

@@ -30,6 +30,7 @@ downgrade-for-msrv:
     cargo {{ toolchain }} update -p=litemap --precise=0.7.4 # next ver: 1.81.0
     cargo {{ toolchain }} update -p=zerofrom --precise=0.1.5 # next ver: 1.81.0
     cargo {{ toolchain }} update -p=half --precise=2.4.1 # next ver: 1.81.0
+    cargo {{ toolchain }} update -p=time --precise=0.3.41 # next ver: 1.81.0
 
 msrv := ```
     cargo metadata --format-version=1 \