Tests/RunCMake/File_Archive: Match expected errors more extensibly

Tests/RunCMake/File_Archive/gnutar-with-bad-compression-stderr.txt

@@ -1,4 +1,4 @@
-CMake Error at roundtrip\.cmake:38 \(file\):
+CMake Error at roundtrip\.cmake:[0-9]+ \(file\):
   file PPMd compression is not supported for gnutar format
 Call Stack \(most recent call first\):
   gnutar-with-bad-compression\.cmake:6 \(include\)

Tests/RunCMake/File_Archive/unsupported-format-stderr.txt

@@ -1,4 +1,4 @@
-CMake Error at roundtrip\.cmake:38 \(file\):
+CMake Error at roundtrip\.cmake:[0-9]+ \(file\):
   file archive format rar not supported
 Call Stack \(most recent call first\):
   unsupported-format\.cmake:5 \(include\)

Tests/RunCMake/File_Archive/zip-with-bad-compression-stderr.txt

@@ -1,4 +1,4 @@
-CMake Error at roundtrip\.cmake:38 \(file\):
+CMake Error at roundtrip\.cmake:[0-9]+ \(file\):
   file PPMd compression is not supported for zip format
 Call Stack \(most recent call first\):
   zip-with-bad-compression\.cmake:6 \(include\)