Update rust (#33)

Co-authored-by: Andrew Murray <radarhere@users.noreply.github.com>

Author: radarhere

.github/workflows/wheels.yml

@@ -160,6 +160,11 @@ jobs:
           & python.exe winbuild\build_prepare.py -v --no-imagequant --architecture=${{ matrix.cibw_arch }}
         shell: pwsh
 
+      - name: Update rust
+        if: matrix.cibw_arch == 'AMD64'
+        run: |
+          rustup update
+
       - name: Build wheels
         run: |
           setlocal EnableDelayedExpansion