Bump System.Text.RegularExpressions from 4.3.0 to 4.3.1 in /DSAnimStudio#27

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dependabot/nuget/DSAnimStudio/System.Text.RegularExpressions-4.3.1Meowmaritus/DSAnimStudio:dependabot/nuget/DSAnimStudio/System.Text.RegularExpressions-4.3.1Copy head branch name to clipboard