Bump known good clippy version to 1.83

In addition to just moving this forward, which is good, this also
eliminates breakage on building the home crate, which we inherit through
lalrpop and term.  The home crate recently bumped its msrv to 1.81.

.github/workflows/rust.yml

@@ -27,7 +27,7 @@ jobs:
         # informationally check the latest as well.  We should
         # regularly update the known good once we know that tests
         # pass on it
-        rust-toolchain: [ 1.77, stable, nightly ]
+        rust-toolchain: [ 1.83, stable, nightly ]
     steps:
     - uses: actions/checkout@v3
     - name: Setup
@@ -37,9 +37,9 @@ jobs:
     - name: Check clippy
       id: clippy
       run: .github/workflows/clippy.sh ${{ matrix.rust-toolchain }}
-      continue-on-error: ${{ matrix.rust-toolchain != '1.77' }}
+      continue-on-error: ${{ matrix.rust-toolchain != '1.83' }}
     - name: Store clippy flag
-      if: (matrix.rust-toolchain != '1.77')
+      if: (matrix.rust-toolchain != '1.83')
       run: |
         mkdir -p ./clippy-${{ matrix.rust-toolchain }}
         if [[ ${{ steps.clippy.outcome }} == "success" ]] ; then \
@@ -49,7 +49,7 @@ jobs:
         fi
         echo ${{ github.event.number }} > ./clippy-${{ matrix.rust-toolchain }}/issue_num
     - uses: actions/upload-artifact@v3
-      if: (matrix.rust-toolchain != '1.77')
+      if: (matrix.rust-toolchain != '1.83')
       with:
         name: clippy-${{ matrix.rust-toolchain }}
         path: clippy-${{ matrix.rust-toolchain }}/