release: PMM v0.5.2 — mirror registry + download artifacts

- web/mirror/packages/pmm.json: bump to 0.5.2; add win/linux-amd64 + linux-aarch64
  variants (amd64 .pdm built from the 0.5.2 binaries).
- web/mirror/packages/pmm/: add 0.5.2-linux|windows|aarch64 .pdm.
- web/download/: swap 0.5.1 artifacts for 0.5.2.

web/mirror/packages/pmm.json

@@ -1,6 +1,6 @@
 {
     "name": "pmm",
-    "version": "0.5.1",
+    "version": "0.5.2",
     "os": "windows",
     "arch": "amd64",
     "description": "PMM",
@@ -544,6 +544,33 @@
             "url": "https://pmm.parlz.com/mirror/packages/pmm/0.5.1-linux-aarch64.pdm",
             "sha256": "229ea5ed332406726243c1978e4e2b68291c8e19d417ca975ddd67636e2d85ab",
             "description": "PMM v0.5.1 (aarch64)"
+        },
+        {
+            "version": "0.5.2",
+            "os": "windows",
+            "arch": "amd64",
+            "file": "0.5.2-windows-amd64.pdm",
+            "url": "https://pmm.parlz.com/mirror/packages/pmm/0.5.2-windows-amd64.pdm",
+            "sha256": "10f0f641e62d17067b3ed72cbf1013d8e0789a4d2dfc884e71368b1de5ee60d6",
+            "description": "PMM v0.5.2"
+        },
+        {
+            "version": "0.5.2",
+            "os": "linux",
+            "arch": "amd64",
+            "file": "0.5.2-linux-amd64.pdm",
+            "url": "https://pmm.parlz.com/mirror/packages/pmm/0.5.2-linux-amd64.pdm",
+            "sha256": "9853254bee1ccdd36d571b7e0f45fd4d7143ec962bca61dee5eec7e7c15b15b5",
+            "description": "PMM v0.5.2"
+        },
+        {
+            "version": "0.5.2",
+            "os": "linux",
+            "arch": "aarch64",
+            "file": "0.5.2-linux-aarch64.pdm",
+            "url": "https://pmm.parlz.com/mirror/packages/pmm/0.5.2-linux-aarch64.pdm",
+            "sha256": "80179a788486759349a81f88b63db51def7ca819b862c235f5533809f95e6c11",
+            "description": "PMM v0.5.2 (aarch64)"
         }
     ]
 }