Update other python dependencies (jazzband#761)

* Update Python coverage package to 7.6.8

* Update Python pytest-cov package to 6.0.0

* Update Python pydot package to 3.0.3

Author: albertyw

requirements.txt

@@ -1,9 +1,9 @@
-coverage==7.6.1
+coverage==7.6.8
 factory-boy==3.3.1
 freezegun==1.5.1
 networkx==3.2.1
 pillow==11.0.0
-pydot==1.4.2
+pydot==3.0.3
 pygments==2.18.0
-pytest-cov==5.0.0
+pytest-cov==6.0.0
 pytest-django==4.9.0