The svg package creates two temporary files for each .svg file that is included in the document (one .pdf file and one .pdf_tex file). These are placed into a subfolder called svg-inkscape/ by default.
@@ -185,6 +185,9 @@ _minted*
# scrwfile
*.wrt
+# svg
+svg-inkscape/
+
# sympy
*.sout
*.sympy