gh: re-enable oda download #4702

Job	Run time
linux-cmake	1m 59s
mips32-big-endian	8m 42s
linux (CFLAGS="-O1 -fno-omit-frame-pointer -fsanitize=address -fno-var-tracking" --disable-bindin...	3m 35s
ppc64-big-endian	7m 36s
linux (CC="clang")	3m 58s
macOS	7m 9s
linux (--enable-release)	33m 19s
linux (--enable-gcov --disable-bindings --disable-docs CFLAGS="-O0 -g")	5m 18s
mingw	29m 15s
linux (--disable-write --disable-docs)	4m 55s
mingw-cmake	3m 22s
linux (CFLAGS="-O2 -m32" --disable-bindings --disable-docs)	4m 20s
vs2019	5m 4s
linux (CFLAGS="-O2 -fno-omit-frame-pointer -fsanitize=undefined -fno-var-tracking" --disable-bind...	8m 12s
vs2019-ninja	5m 18s
	2h 12m 2s

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