add additional valid checksum for optmatch 0.9-15 in extension in R 4.1.2

[akesandgren]

(created using eb --new-pr)

Change is only in the DESCRIPTION file.

[SebastianAchilles]

lgtm

[SebastianAchilles]

@boegelbot please test @ generoso
CORE_CNT=16
EB_ARGS="--parallel-extensions-install --experimental --force-download --sourcepath /tmp/$USER/pr14993"

[boegelbot]

@SebastianAchilles: Request for testing this PR well received on login1

PR test command 'EB_PR=14993 EB_ARGS="--parallel-extensions-install --experimental --force-download --sourcepath /tmp/$USER/pr14993" /opt/software/slurm/bin/sbatch --job-name test_PR_14993 --ntasks="16" ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 8137

Test results coming soon (I hope)...

- notification for comment with ID 1039965807 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in total)
cnx3 - Linux Rocky Linux 8.5, x86_64, Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz (haswell), Python 3.6.8
See https://gist.github.com/09bf1917b1face3374c055e9cce2a52a for a full test report.

[SebastianAchilles]

Going in, thanks @akesandgren!