niv musl-wasi: update 215adc8a -> d2482b78

## Changelog for musl-wasi:
Branch: 
Commits: [WebAssembly/wasi-libc@215adc8a...d2482b78](WebAssembly/wasi-libc@215adc8...d2482b7)

* [`d2482b78`](WebAssembly/wasi-libc@d2482b7) activate the use of __heap_base ([WebAssembly/wasi-libc⁠#215](http://r.duckduckgo.com/l/?uddg=https://github.com/WebAssembly/wasi-libc/issues/215))

Author: dfinity-bot

nix/sources.json

@@ -1,5 +1,5 @@
 {
-   "common": {
+    "common": {
         "ref": "master",
         "repo": "ssh://[email protected]/dfinity-lab/common",
         "rev": "129dcc07ccf90440e0ececf5e8cf1a5a0318f8fe",
@@ -63,10 +63,10 @@
         "homepage": "https://wasi.dev",
         "owner": "WebAssembly",
         "repo": "wasi-libc",
-        "rev": "215adc8ac9f91eb055311acc72683fd2eb1ae15a",
-        "sha256": "004hkwh2yy7ifnxm13igpvfz7pnn0wkh2bv2z2lw1qc28d33wq56",
+        "rev": "d2482b786a00c790f3b8d1bf13f0ca12b0364d9c",
+        "sha256": "16q4cdlw4qacf8p9zxzin27klc4vyy1zxwzi9b33pn4z1x688f59",
         "type": "tarball",
-        "url": "https://github.com/WebAssembly/wasi-libc/archive/215adc8ac9f91eb055311acc72683fd2eb1ae15a.tar.gz",
+        "url": "https://github.com/WebAssembly/wasi-libc/archive/d2482b786a00c790f3b8d1bf13f0ca12b0364d9c.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs": {