Fix publish GHA.

```
# expansion is pretty cool
# https://www.gnu.org/software/bash/manual/html_node/Shell-Expansions.html
echo "hello `world`"
echo "hello ${world}"

# single quotes disable expansion
# https://www.gnu.org/software/bash/manual/html_node/Single-Quotes.html
echo 'hello `world`'
echo 'hello ${world}'

# Problem - single quotes in single quotes
echo 'hello ' world'

# Fix #1: quote the single quote, which is exciting
echo 'hello '"'"' world'

# Fix #2: heredoc, maybe more readable but awkward
# https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#Here-Documents
echo <<'EOF'
hello ' world
EOF
```

PiperOrigin-RevId: 675586161

.github/workflows/publish.yaml

@@ -89,7 +89,10 @@ jobs:
         gh release create "v${{ env.version }}" \
             --target="${{ github.sha }}" \
             --title="TensorFlow Federated ${{ env.version }}" \
-            --notes='${{ env.description }}'
+            --notes="$(cat <<'EOF'
+        ${{ env.description }}
+        EOF
+        )"
 
   build-package:
     name: Build Package