Merge pull request #1745 from fsprojects/repo-assist/improve-sha1-disposal-caching-2026-04-16-f466c854a7d11c78

[Repo Assist] fix: dispose SHA1 instance in Caching.hashString; use SHA1.HashData on .NET 5+

Author: dsyme

src/FSharp.Data.Runtime.Utilities/Caching.fs

@@ -55,7 +55,15 @@ let createInMemoryCache (expiration: TimeSpan) =
 /// Get hash code of a string - used to determine cache file
 let private hashString (plainText: string) =
     let plainTextBytes = Encoding.UTF8.GetBytes(plainText)
-    let hashBytes = SHA1.Create().ComputeHash(plainTextBytes)
+
+    let hashBytes =
+#if NET5_0_OR_GREATER
+        SHA1.HashData(plainTextBytes)
+#else
+        use sha1 = SHA1.Create()
+        sha1.ComputeHash(plainTextBytes)
+#endif
+
     let s = Convert.ToBase64String(hashBytes)
     s.Replace("ab", "abab").Replace("\\", "ab")