FS-9986: [libvpx] update .gitignore to exclude erronesously matched Makefile

2c761f6f · Kevin James · c8256837 · 2c761f6f
--- a/libs/libvpx/.gitignore
+++ b/libs/libvpx/.gitignore
@@ -13,3 +13,5 @@ vpx_config.h
 vpx_dsp_rtcd.h
 vpx_scale_rtcd.h
 vpx_version.h
+!build/make/Makefile