minor change

Author: arturcic

src/GitVersion.Core/VersionCalculation/SemanticVersioning/SemanticVersion.cs

@@ -11,7 +11,7 @@ public class SemanticVersion : IFormattable, IComparable<SemanticVersion>, IEqua
 
     private static readonly Regex ParseSemVer = new(
         @"^(?<SemVer>(?<Major>\d+)(\.(?<Minor>\d+))?(\.(?<Patch>\d+))?)(\.(?<FourthPart>\d+))?(-(?<Tag>[^\+]*))?(\+(?<BuildMetaData>.*))?$",
-        RegexOptions.Compiled);
+        RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
     public long Major;
     public long Minor;

src/GitVersion.Core/VersionCalculation/SemanticVersioning/SemanticVersionPreReleaseTag.cs

@@ -8,6 +8,10 @@ namespace GitVersion;
 public class SemanticVersionPreReleaseTag :
     IFormattable, IComparable<SemanticVersionPreReleaseTag>, IEquatable<SemanticVersionPreReleaseTag?>
 {
+    private static readonly Regex ParseRegex = new(
+        @"(?<name>.*?)\.?(?<number>\d+)?$",
+        RegexOptions.Compiled | RegexOptions.IgnoreCase);
+
     private static readonly LambdaEqualityHelper<SemanticVersionPreReleaseTag> EqualityHelper =
         new(x => x.Name, x => x.Number);
 
@@ -67,7 +71,7 @@ public static SemanticVersionPreReleaseTag Parse(string? preReleaseTag)
             return new SemanticVersionPreReleaseTag();
         }
 
-        var match = Regex.Match(preReleaseTag, @"(?<name>.*?)\.?(?<number>\d+)?$");
+        var match = ParseRegex.Match(preReleaseTag);
         if (!match.Success)
         {
             // TODO check how to log this