Revert "gnu: python-pytest: Update to 7.3.1."

This reverts commit 81682e2e90.

gnu/packages/check.scm

@@ -1261,14 +1261,14 @@ standard library.")
 (define-public python-pytest
   (package
     (name "python-pytest")
-    (version "7.3.1")
+    (version "7.1.3")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "pytest" version))
        (sha256
         (base32
-         "1qqmxpcij6b2zqsg52nz9dfx6c3snz90l5nzmp88xmxig3yzljj3"))))
+         "0f8c31v5r2kgjixvy267n0nhc4xsy65g3n9lz1i1377z5pn5ydjg"))))
     (build-system python-build-system)
     (arguments
      (list
@@ -1296,7 +1296,6 @@ standard library.")
                   (format #t "test suite not run~%")))))))
     (propagated-inputs
      (list python-attrs-bootstrap
-           python-exceptiongroup
            python-iniconfig
            python-packaging-bootstrap
            python-pluggy