Don't try and handle colons in filenames as we don't seem to be able to test them via GitHub Actions anyway

Author: peternewman

.github/workflows/test.yml

@@ -14,5 +14,3 @@ jobs:
     - uses: ./
     - name: Check sort with disorder
       run: sort -c test/test.txt || true
-    - name: Check sort with disorder in an unusually named file
-      run: sort -c test/test\:2.txt || true

sort-matcher.json

@@ -4,7 +4,7 @@
 			"owner": "sort-matcher",
 			"pattern": [
 				{
-					"regexp": "^sort:\\s+(.+):(\\d+):\\s+(.+)$",
+					"regexp": "^sort:\\s+([^:]+):(\\d+):\\s+(.+)$",
 					"file": 1,
 					"line": 2,
 					"message": 3