Potential fix for code scanning alert no. 35: Generic catch clause

Solving a generic catch clause by expanding to all relevant exception types

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: DoubledDoge

src/TypeGuard.Core/Rules/StringRules.cs

@@ -329,7 +329,23 @@ public bool IsValid(string value)
             string fullPath = Path.GetFullPath(value);
             return !mustExist || File.Exists(fullPath);
         }
-        catch
+        catch (ArgumentException)
+        {
+            return false;
+        }
+        catch (ArgumentNullException)
+        {
+            return false;
+        }
+        catch (PathTooLongException)
+        {
+            return false;
+        }
+        catch (NotSupportedException)
+        {
+            return false;
+        }
+        catch (IOException)
         {
             return false;
         }