fix(pypi): update get_maintainers_of_package to avoid request blocking (#1097)

Signed-off-by: Amine <amine.raouane@enim.ac.ma>

Author: AmineRaouane

src/macaron/slsa_analyzer/package_registry/pypi_registry.py

@@ -320,7 +320,8 @@ def get_package_page(self, package_name: str) -> str | None:
         str | None
             The package main page.
         """
-        url = os.path.join(self.registry_url, "project", package_name)
+        # Important: trailing '/' avoids JS-based redirect; ensures Macaron can access the page directly
+        url = urllib.parse.urljoin(self.registry_url, f"project/{package_name}/")
         response = send_get_http_raw(url)
         if response:
             html_snippets = response.content.decode("utf-8")
@@ -360,7 +361,8 @@ def get_maintainer_profile_page(self, username: str) -> str | None:
         str | None
             The profile page.
         """
-        url = os.path.join(self.registry_url, "user", username)
+        # Important: trailing '/' avoids JS-based redirect; ensures Macaron can access the page directly
+        url = urllib.parse.urljoin(self.registry_url, f"user/{username}/")
         response = send_get_http_raw(url, headers=None)
         if response:
             html_snippets = response.content.decode("utf-8")