Try fix hashbrown version on msrv

Author: mejrs

.github/workflows/ci.yml

@@ -181,7 +181,7 @@ jobs:
         run: |
           set -x
           cargo update -p indexmap --precise 1.6.2
-          cargo update -p hashbrown:0.12.2 --precise 0.9.1
+          cargo update -p hashbrown:0.12.3 --precise 0.9.1
           PROJECTS=("." "examples/decorator" "examples/maturin-starter" "examples/setuptools-rust-starter" "examples/word-count")
           for PROJ in ${PROJECTS[@]}; do
             cargo update --manifest-path "$PROJ/Cargo.toml" -p parking_lot --precise 0.11.0