Ignore auxiliary files from \usepackage{cprotect}

[cprotect](https://www.ctan.org/tex-archive/macros/latex/contrib/cprotect?lang=en) tracks its contents in an auxiliary file, this is safe to ignore.

TeX.gitignore

@@ -32,8 +32,6 @@
 *.pdfsync
 
 ## Auxiliary and intermediate files from other packages:
-
-
 # algorithms
 *.alg
 *.loa
@@ -49,6 +47,9 @@ acs-*.bib
 *.snm
 *.vrb
 
+# cprotect
+*.cpt
+
 #(e)ledmac/(e)ledpar
 *.end
 *.[1-9]