add University of Pennsylvania postdoc job (#1754)

Google Form response 615

Signed-off-by: Chad Dougherty <[email protected]>

Author: crd477

_data/jobs.yml

@@ -1,3 +1,8 @@
+- expires: 2025-08-15
+  location: Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA
+  name: Postdoctoral Researcher
+  posted: 2025-07-29
+  url: https://academicjobsonline.org/ajo/jobs/30295
 - expires: 2025-08-29
   location: Climate People, Pittsburgh, PA
   name: Senior Computational Software Engineer