Install CIRCT outside of conda (add CI to auto-update)

.github/workflows/update-circt.yml

@@ -0,0 +1,24 @@
+name: update-circt
+
+# run weekly
+on: push
+#  schedule:
+#    - cron: 0 0 * * 1
+
+defaults:
+  run:
+    shell: bash -leo pipefail {0}
+
+jobs:
+  update-circt:
+    name: update-circt
+    runs-on: ubuntu-latest
+    steps:
+      - name: Update CIRCT
+        uses: circt/update-circt@v1.0.0
+        with:
+          user: 'bartender'
+          email: 'firesimchipyard@gmail.com'
+          pr-reviewers: ''
+          pr-labels: 'changelog:changed'
+          circt-config: './conda-reqs/circt.json'