fix: install pycparser to resolve cairocffi build error

Author: mfarhan943

requirements/pip_tools.in

@@ -1,3 +1,4 @@
 # Dependencies to run compile tools
 -c constraints.txt
 pip-tools                           # Contains pip-compile, used to generate pip requirements files
+pycparser

requirements/pip_tools.txt

@@ -12,6 +12,8 @@ packaging==25.0
     # via build
 pip-tools==7.4.1
     # via -r requirements/pip_tools.in
+pycparser==2.22
+    # via -r requirements/pip_tools.in
 pyproject-hooks==1.2.0
     # via
     #   build