feat: add default riscv64 images (#2506)

bin/update_docker.py

@@ -71,8 +71,12 @@ images = [
             "pypy_aarch64",
         ],
     ),
+    # manylinux_2_39 images
+    PyPAImage("manylinux_2_39", ["riscv64"]),
     # musllinux_1_2 images
-    PyPAImage("musllinux_1_2", ["x86_64", "i686", "aarch64", "ppc64le", "s390x", "armv7l"]),
+    PyPAImage(
+        "musllinux_1_2", ["x86_64", "i686", "aarch64", "ppc64le", "s390x", "armv7l", "riscv64"]
+    ),
 ]
 
 config = configparser.ConfigParser()
@@ -136,8 +140,5 @@ for image in images:
             suffix = f"_{platform.removeprefix('pypy_')}"
         config[platform][image.manylinux_version] = f"{image.image_name}{suffix}:{tag_name}"
 
-if not config.has_section("riscv64"):
-    config["riscv64"] = {}
-
 with open(RESOURCES / "pinned_docker_images.cfg", "w") as f:
     config.write(f)