External stdlibs: stop using the unauthenticated `git://` protocol in the...

External stdlibs: stop using the unauthenticated `git://` protocol in the external stdlib URLs (#42906)

stdlib/ArgTools.version

 ARGTOOLS_BRANCH = master
 ARGTOOLS_SHA1 = 08b11b2707593d4d7f92e5f1b9dba7668285ff82
-ARGTOOLS_GIT_URL := git://github.com/JuliaIO/ArgTools.jl.git
+ARGTOOLS_GIT_URL := https://github.com/JuliaIO/ArgTools.jl.git
 ARGTOOLS_TAR_URL = https://api.github.com/repos/JuliaIO/ArgTools.jl/tarball/$1

stdlib/Downloads.version

 DOWNLOADS_BRANCH = master
 DOWNLOADS_SHA1 = c91876a38f42d9a899b6ec10493d144bb59281eb
-DOWNLOADS_GIT_URL := git://github.com/JuliaLang/Downloads.jl.git
+DOWNLOADS_GIT_URL := https://github.com/JuliaLang/Downloads.jl.git
 DOWNLOADS_TAR_URL = https://api.github.com/repos/JuliaLang/Downloads.jl/tarball/$1

stdlib/LibCURL.version

 LIBCURL_BRANCH = master
 LIBCURL_SHA1 = 04c450c17024d5b49cb30013f1409306efd35203
-LIBCURL_GIT_URL := git://github.com/JuliaWeb/LibCURL.jl.git
+LIBCURL_GIT_URL := https://github.com/JuliaWeb/LibCURL.jl.git
 LIBCURL_TAR_URL = https://api.github.com/repos/JuliaWeb/LibCURL.jl/tarball/$1

stdlib/NetworkOptions.version

 NETWORKOPTIONS_BRANCH = master
 NETWORKOPTIONS_SHA1 = 01e6ec17aa4ef74b4a0ea19c193dacf8d2cfc353
-NETWORKOPTIONS_GIT_URL := git://github.com/JuliaLang/NetworkOptions.jl.git
+NETWORKOPTIONS_GIT_URL := https://github.com/JuliaLang/NetworkOptions.jl.git
 NETWORKOPTIONS_TAR_URL = https://api.github.com/repos/JuliaLang/NetworkOptions.jl/tarball/$1

stdlib/Pkg.version

 PKG_BRANCH = master
 PKG_SHA1 = 570b605870ea9e6645c68e6be5f98c1adc9925d8
-PKG_GIT_URL := git://github.com/JuliaLang/Pkg.jl.git
+PKG_GIT_URL := https://github.com/JuliaLang/Pkg.jl.git
 PKG_TAR_URL = https://api.github.com/repos/JuliaLang/Pkg.jl/tarball/$1

stdlib/SHA.version

 SHA_BRANCH = master
 SHA_SHA1 = d30dbf6f75b30b84c678208bb93438bd75a5f3ef
-SHA_GIT_URL := git://github.com/JuliaCrypto/SHA.jl.git
+SHA_GIT_URL := https://github.com/JuliaCrypto/SHA.jl.git
 SHA_TAR_URL = https://api.github.com/repos/JuliaCrypto/SHA.jl/tarball/$1

stdlib/Statistics.version

 STATISTICS_BRANCH = master
 STATISTICS_SHA1 = 5256d570d0a554780ed80949c79116f47eac6382
-STATISTICS_GIT_URL := git://github.com/JuliaLang/Statistics.jl.git
+STATISTICS_GIT_URL := https://github.com/JuliaLang/Statistics.jl.git
 STATISTICS_TAR_URL = https://api.github.com/repos/JuliaLang/Statistics.jl/tarball/$1

stdlib/SuiteSparse.version

 SUITESPARSE_BRANCH = master
 SUITESPARSE_SHA1 = e4df734c3e0b54cd2275adbd923b5afaf0f7e3d0
-SUITESPARSE_GIT_URL := git://github.com/JuliaLang/SuiteSparse.jl.git
+SUITESPARSE_GIT_URL := https://github.com/JuliaLang/SuiteSparse.jl.git
 SUITESPARSE_TAR_URL = https://api.github.com/repos/JuliaLang/SuiteSparse.jl/tarball/$1

stdlib/Tar.version

 TAR_BRANCH = master
 TAR_SHA1 = e65daff574387ec936371c11ceb3ae93907645a1
-TAR_GIT_URL := git://github.com/JuliaIO/Tar.jl.git
+TAR_GIT_URL := https://github.com/JuliaIO/Tar.jl.git
 TAR_TAR_URL = https://api.github.com/repos/JuliaIO/Tar.jl/tarball/$1