Upgrade Jinja2 dependency version specification to address CVE-2024-22195

CVE-2024-22195 identified an issue in Jinja2 versions <= 3.1.2. As such
we've gone and changed oure dependency requirement specification to be
3.1.3.

Author: QMalcolm

requirements.txt

@@ -71,7 +71,7 @@ isodate==0.6.1
     # via
     #   agate
     #   dbt-core
-jinja2==3.1.2
+jinja2==3.1.3
     # via
     #   dbt-core
     #   diff-cover