ci: share Linux restore artifacts before builds [CI]

ci/cleanup-build-cache.sh

@@ -15,7 +15,7 @@ for line in sys.stdin:
     if len(fields)!=3 or float(fields[1]) >= cutoff:
         continue
     name=fields[2]
-    if name in ("<none>:<none>", ":") or re.fullmatch(r"localhost/moshiro-(agent|backend):[0-9][A-Za-z0-9._-]*",name):
+    if name in ("<none>:<none>", ":") or re.fullmatch(r"localhost/moshiro-(agent|backend):[0-9][A-Za-z0-9._-]*",name) or re.fullmatch(r"localhost/moshiro-agent-restore:[0-9a-f]{40}-linux-(x64|arm64|musl-arm64)",name):
         print(fields[0])
 ')
 for image in "${expired[@]}"; do