[release] Boost 1.81.0 Beta 1 Release Candidate 1 is available

From: Marshall Clow (mclow.lists_at_[hidden])
Date: 2022-11-10 17:00:30

Available at:
<https://boostorg.jfrog.io/artifactory/main/beta/1.81.0.beta1/source/>

The SHA256 checksums are as follows:

6b6b95fde0ec9c6c0e1584f35c6c2dc4eb6c8629c9635e844b8e6a9ad9594da1  boost_1_81_0_b1_rc1.tar.gz
9f2ce5d1cefb8f6b7e8cfcabc73632f348958e7cba2604dcb3688fecf6463d67  boost_1_81_0_b1_rc1.tar.bz2
e7547a789339499c6fc582a96ffb8989d97074f107520ddebc1ed5f30a0d6964  boost_1_81_0_b1_rc1.zip
758af4ae4f4224b6f2bd8f05fe0109d1f248c0377ee2dce03ccbeb30d82fb8b4  boost_1_81_0_b1_rc1.7z

As always, the release managers would appreciate it if you download the
candidate of your choice and give building it a try. Please report both
success and failure, and anything else that is noteworthy.

-- The Release Managers