Use %zu to print size_t
Use %zu to print size_t

`estimated_size_` and `kMaximumOutputSize` are in `size_t` (`unsigned long long`) for 64-bit processor, but `%lu` only accept `unsigned long`. `%zu` will handle `size_t` for 32-bit and 64-bit processors correctly.

Closes #5473.

PiperOrigin-RevId: 202291659

aehlig/bazel,perezd/bazel,davidzchen/bazel,bazelbuild/bazel,perezd/bazel,akira-baruah/bazel,twitter-forks/bazel,bazelbuild/bazel,akira-baruah/bazel,ButterflyNetwork/bazel,safarmer/bazel,akira-baruah/bazel,dropbox/bazel,werkt/bazel,katre/bazel,meteorcloudy/bazel,ulfjack/bazel,dslomov/bazel,dslomov/bazel-windows,cushon/bazel,aehlig/bazel,katre/bazel,twitter-forks/bazel,twitter-forks/bazel,werkt/bazel,ulfjack/bazel,dslomov/bazel-windows,dslomov/bazel,davidzchen/bazel,perezd/bazel,katre/bazel,twitter-forks/bazel,aehlig/bazel,bazelbuild/bazel,werkt/bazel,safarmer/bazel,davidzchen/bazel,cushon/bazel,perezd/bazel,katre/bazel,cushon/bazel,safarmer/bazel,ulfjack/bazel,ButterflyNetwork/bazel,perezd/bazel,cushon/bazel,meteorcloudy/bazel,dslomov/bazel-windows,dslomov/bazel-windows,ulfjack/bazel,akira-baruah/bazel,aehlig/bazel,dropbox/bazel,meteorcloudy/bazel,davidzchen/bazel,dslomov/bazel,dropbox/bazel,davidzchen/bazel,meteorcloudy/bazel,dslomov/bazel,werkt/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,davidzchen/bazel,meteorcloudy/bazel,meteorcloudy/bazel,dslomov/bazel,dropbox/bazel,werkt/bazel,safarmer/bazel,dslomov/bazel-windows,twitter-forks/bazel,twitter-forks/bazel,ulfjack/bazel,twitter-forks/bazel,cushon/bazel,cushon/bazel,perezd/bazel,ButterflyNetwork/bazel,safarmer/bazel,aehlig/bazel,dropbox/bazel,dropbox/bazel,bazelbuild/bazel,katre/bazel,akira-baruah/bazel,ulfjack/bazel,ButterflyNetwork/bazel,aehlig/bazel,akira-baruah/bazel,katre/bazel,davidzchen/bazel,perezd/bazel,dslomov/bazel,dslomov/bazel-windows,dslomov/bazel,bazelbuild/bazel,aehlig/bazel,ButterflyNetwork/bazel,ulfjack/bazel,werkt/bazel,bazelbuild/bazel,safarmer/bazel