python-babel: bump to 2.18.0

Changelog: https://github.com/python-babel/babel/blob/master/CHANGES.rst

Minor release with bug fixes. Resets PKG_RELEASE to 1.
Add test.sh to verify locale, date, and number formatting.

Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>

lang/python/python-babel/test.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+[ "$1" = python3-babel ] || exit 0
+python3 - << 'EOF'
+import babel
+assert babel.__version__, "babel version is empty"
+
+from babel import Locale
+from babel.dates import format_date, format_datetime
+from babel.numbers import format_number, format_currency
+import datetime
+
+locale = Locale.parse("en_US")
+assert locale.territory == "US"
+
+d = datetime.date(2024, 1, 15)
+formatted = format_date(d, locale="en_US")
+assert "2024" in formatted, f"date format missing year: {formatted}"
+
+n = format_number(1234567.89, locale="en_US")
+assert "1,234,567" in n, f"number format unexpected: {n}"
+
+c = format_currency(9.99, "USD", locale="en_US")
+assert "$" in c or "USD" in c, f"currency format unexpected: {c}"
+EOF