Remove toolchain input when toolchain is specified in action rev

scripts/update-revs.sh

@@ -29,7 +29,11 @@ for rev in `releases` stable beta nightly; do
     echo "Updating $rev branch"
     git checkout --quiet "$base"
     git branch --quiet --delete --force $rev &>/dev/null || true
-    sed -i "s/required: true/required: false\n    default: $rev/" action.yml
+    if [[ $rev == 1* ]]; then
+        sed -i "/^  toolchain:/,+2d; s/\${{inputs\.toolchain}}/$rev/" action.yml
+    else
+        sed -i "s/required: true/required: false\n    default: $rev/" action.yml
+    fi
     git add action.yml
     git commit --quiet --message "toolchain: $rev"
     git checkout --quiet -b $rev