Don't constrain importlib-metadata in noxfile.py

Signed-off-by: Pedro Algarvio <palgarvio@vmware.com>

noxfile.py

@@ -115,7 +115,7 @@ def tests(session):
         # Always have the wheel package installed
         session.install("wheel", silent=PIP_INSTALL_SILENT)
         session.install(COVERAGE_VERSION_REQUIREMENT, silent=PIP_INSTALL_SILENT)
-        salt_requirements = ["importlib-metadata<5.0.0"]
+        salt_requirements = []
         salt_requirements.append(SALT_REQUIREMENT)
         if session.python is not False and system_service is False:
             session.install(
@@ -126,15 +126,15 @@ def tests(session):
             )
         pytest_version_requirement = os.environ.get("PYTEST_VERSION_REQUIREMENT") or None
         if pytest_version_requirement:
-            pytest_requirements = ["importlib-metadata<5.0.0"]
+            pytest_requirements = []
             if not pytest_version_requirement.startswith("pytest"):
                 pytest_version_requirement = f"pytest{pytest_version_requirement}"
             pytest_requirements.append(pytest_version_requirement)
             session.install(*pytest_requirements, silent=PIP_INSTALL_SILENT)
         if system_service:
-            session.install("importlib-metadata<5.0.0", ".", silent=PIP_INSTALL_SILENT)
+            session.install(".", silent=PIP_INSTALL_SILENT)
         else:
-            session.install("importlib-metadata<5.0.0", "-e", ".", silent=PIP_INSTALL_SILENT)
+            session.install("-e", ".", silent=PIP_INSTALL_SILENT)
         pip_list = session_run_always(
             session, "pip", "list", "--format=json", silent=True, log=False, stderr=None
         )