package/{rust, rust-bin}: bump to version 1.64.0

Link to Rust 1.64.0 annoucement: https://blog.rust-lang.org/2022/09/22/Rust-1.64.0.html

Newest version of the source archives have been retrieved with their hash values,
and the signature of the .asc files have been verified as follows:
$ curl -fsSL https://static.rust-lang.org/rust-key.gpg.ascii

 | gpg --import
$ gpg --verify <filename.asc> <filename>

There is no typographical error in the packages according to the check-pakage utility:
$ ./utils/check-package package/rust-bin/*
$ ./utils/check-package package/rust/*

The testsuite tool were successfully run for rust and rust-bin packages to test
the Rust toolchain under 1.64.0:
$ ./support/testing/run-tests -k -d dl/ -o testsuite tests.package.test_rust.TestRustBin
$ ./support/testing/run-tests -k -d dl/ -o testsuite tests.package.test_rust.TestRust

In order to verify the compatibility of packages depending on Rust 1.64.0,
tests using `./utils/test-pkg` were run.
You may want to execute the test-pkg command after creating a `.config` file
enabling the corresponding BR2_PACKAGE, for example:
Create a file `buildroot/ripgrep.config` containing "BR2_PACKAGE_RIPGREP=y"
Then execute:
$ ./utils/test-pkg -d test-pkg -c ripgrep.config -p ripgrep

Results:
librsvg OK
ripgrep OK
suricata OK
bat OK

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>