update secret to var

Author: camfairchild

.github/workflows/check-finney.yml

@@ -30,7 +30,7 @@ jobs:
 
       - name: Check that spec_version has been bumped
         run: |
-          spec_version=$(PATH=$PATH:$HOME/.cargo/.bin substrate-spec-version ${{ secrets.NUCLEUS_ARCHIVE_NODE }} | tr -d '\n')
+          spec_version=$(PATH=$PATH:$HOME/.cargo/.bin substrate-spec-version ${{ vars.NUCLEUS_ARCHIVE_NODE }} | tr -d '\n')
           echo "network spec_version: $spec_version"
           : ${spec_version:?bad spec version}
           local_spec_version=$(cargo run -p node-subtensor-runtime --bin spec_version | tr -d '\n')
@@ -49,6 +49,6 @@ jobs:
         uses: "paritytech/[email protected]"
         with:
           runtime-package: "node-subtensor-runtime"
-          node-uri: ${{ secrets.NUCLEUS_ARCHIVE_NODE }}
+          node-uri: ${{ vars.NUCLEUS_ARCHIVE_NODE }}
           checks: "pre-and-post"
           extra-args: "--disable-spec-version-check --no-weight-warnings"