fix(ci): Fix demo-update command by sanitize env for asciinema upload (#1925)

Change script that generates demo to cleanup envvars to avoid
issue faced in the CI to upload the records.

Author: camilamacedo86

.github/workflows/catalogd-demo.yaml

@@ -20,5 +20,11 @@ jobs:
         with:
           go-version-file: "go.mod"
       - name: Run Demo Update
-        run: make demo-update
+        run: |
+          env -i \
+            HOME="$HOME" \
+            PATH="$PATH" \
+            TERM="xterm-256color" \
+            SHELL="/bin/bash" \
+            make demo-update