Migrate to dotnet8 and fix warnings

CsvLib.Tests/ByteArraySearcherTests.cs

@@ -7,60 +7,75 @@ public class ByteArraySearcherTests
     [Fact]
     public void Contains__EmptyNeedle_ReturnsTrue()
     {
-        byte[] haystack = { 1, 2, 3, 4, 5 };
+        // --- Arrange
+        byte[] haystack = [1, 2, 3, 4, 5,];
         byte[] needle = Array.Empty<byte>();
         ByteArraySearcher searcher = new(needle);
 
+        // --- Act
         bool result = searcher.Contains(haystack);
 
+        // --- Assert
         Assert.True(result);
     }
 
     [Fact]
     public void Contains__NeedleAtBeginning_ReturnsTrue()
     {
-        byte[] haystack = { 1, 2, 3, 4, 5 };
-        byte[] needle = { 1, 2, 3 };
+        // --- Arrange
+        byte[] haystack = [1, 2, 3, 4, 5,];
+        byte[] needle = [1, 2, 3,];
         ByteArraySearcher searcher = new(needle);
 
+        // --- Act
         bool result = searcher.Contains(haystack);
 
+        // --- Assert
         Assert.True(result);
     }
 
     [Fact]
     public void Contains__NeedleInMiddle_ReturnsTrue()
     {
-        byte[] haystack = { 1, 2, 3, 4, 5 };
-        byte[] needle = { 3, 4 };
+        // --- Arrange
+        byte[] haystack = [1, 2, 3, 4, 5,];
+        byte[] needle = [3, 4,];
         ByteArraySearcher searcher = new(needle);
 
+        // --- Act
         bool result = searcher.Contains(haystack);
 
+        // --- Assert
         Assert.True(result);
     }
 
     [Fact]
     public void Contains__NeedleAtEnd_ReturnsTrue()
     {
-        byte[] haystack = { 1, 2, 3, 4, 5 };
-        byte[] needle = { 4, 5 };
+        // --- Arrange
+        byte[] haystack = [1, 2, 3, 4, 5,];
+        byte[] needle = [4, 5,];
         ByteArraySearcher searcher = new(needle);
 
+        // --- Act
         bool result = searcher.Contains(haystack);
 
+        // --- Assert
         Assert.True(result);
     }
 
     [Fact]
     public void Contains__NeedleNotPresent_ReturnsFalse()
     {
-        byte[] haystack = { 1, 2, 3, 4, 5 };
-        byte[] needle = { 5, 6, 7 };
+        // --- Arrange
+        byte[] haystack = [1, 2, 3, 4, 5,];
+        byte[] needle = [5, 6, 7,];
         ByteArraySearcher searcher = new(needle);
 
+        // --- Act
         bool result = searcher.Contains(haystack);
 
+        // --- Assert
         Assert.False(result);
     }
 }