CI: nightly was missing 3.13 in badges job

Author: daywalker90

.github/workflows/nightly.yml

@@ -114,10 +114,10 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
-          python-version: "3.12"
+          python-version: "3.13"
       - name: Complete
         run: |
-          python_versions='3.9 3.10 3.11 3.12'
+          python_versions='3.9 3.10 3.11 3.12 3.13'
           echo "Updating badges data for nightly workflow..."
           python3 .ci/update_badges.py nightly $(echo "$python_versions")
           echo "CI completed."

currencyrate/README.md

@@ -59,4 +59,3 @@ a blurb, so I did that for everyone (quoting from their front page):
 * api.coindesk.com: "Powered by CoinDesk: https://www.coindesk.com/price/bitcoin"
 * api.coinbase.com: "The easiest place to buy, sell, and manage your cryptocurrency portfolio."
 * blockchain.info: "The World's Most Popular Way to Buy, Hold, and Use Crypto"
-