SecureRandom.cs: Fix GetPassphrase() bug in .NET 8.

Whilst using Geralt in a .NET 8 CLI program, I noticed that this method returned passphrases with '\r' characters in them on Windows, resulting in them printing to the console incorrectly. This was not an issue in .NET 6 and isn't detected in the tests, even with the changes to the tests. Therefore, there's been some change between .NET 6-8 that affects line endings for embedded files but not in a library context... Regardless, this change is how it should've been written originally for safety.

src/Geralt.Tests/SecureRandomTests.cs

@@ -92,6 +92,7 @@ public void GetPassphrase_Valid(int wordCount, char separatorChar, bool capitali
         Assert.AreEqual(capitalize ? wordCount : 0, passphrase.Count(char.IsUpper));
         Assert.AreEqual(capitalize, char.IsUpper(passphrase[0]));
         Assert.AreEqual(includeNumber, passphrase.Any(char.IsDigit));
+        Assert.IsFalse(passphrase.Any(c => c is '\n' or '\r'));
     }
 
     [TestMethod]

src/Geralt/Crypto/SecureRandom.cs

@@ -54,7 +54,7 @@ public static string GetString(int length, string characterSet = AlphanumericCha
     public static char[] GetPassphrase(int wordCount, char separatorChar = '-', bool capitalize = false, bool includeNumber = false)
     {
         Validation.SizeBetween(nameof(wordCount), wordCount, MinWordCount, MaxWordCount);
-        string[] wordlist = Properties.Resources.wordlist.Split(separator: ["\n"], StringSplitOptions.RemoveEmptyEntries);
+        string[] wordlist = Properties.Resources.wordlist.ReplaceLineEndings().Split(separator: Environment.NewLine, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
         int numberIndex = 0;
         if (includeNumber) { numberIndex = GetInt32(wordCount); }
         var passphrase = new List<char>();