checksrc: exclude generated bundle files to avoid race condition #1484

Job	Run time
cygwin, AM x86_64 openssl R	8m 55s
linux-mingw, AM gcc	2m 31s
cygwin, CM x86_64 openssl	7m 37s
dl-mingw, CM 9.5.0-x86_64 schannel	11m 48s
linux-mingw, CM gcc	1m 21s
dl-mingw, CM 7.3.0-x86_64 schannel U	9m 38s
dl-mingw, CM 6.4.0-i686 schannel !unity	3m 12s
msvc, CM x64-windows schannel MultiSSL U	8m 15s
msvc, CM x64-windows openssl	9m 56s
msvc, CM x64-uwp openssl	3m 32s
msys2, AM x86_64 !proxy	7m 39s
msvc, CM x64-windows libressl	8m 53s
msys2, AM x86_64 default	4m 46s
msys2, CM x86_64 default	6m 16s
msvc, CM x64-windows boringssl	9m 14s
msys2, AM x86_64 default R	7m 12s
msvc, CM x64-windows wolfssl	9m 3s
mingw, AM x86_64 default	6m 45s
msvc, CM x64-windows mbedtls	24m 41s
mingw, AM x86_64 c-ares U	10m 29s
mingw, CM x86_64 schannel c-ares U	6m 48s
mingw, CM ucrt-x86_64 schannel R TrackMemory	3m 2s
mingw, CM clang-x86_64 openssl	2m 8s
mingw, CM ucrt-x86_64 schannel uwp	3m 0s
mingw, CM x86_64 schannel dev debug	2m 35s
mingw, CM i686 schannel R	2m 35s
	3h 1m 51s

Provide feedback