feat(checksums): Add checksum for Erlang 27.3.4.9 (#12)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

data/erlang.json

@@ -127,6 +127,7 @@
   "27.3.4.6": "sha256-QC8C7rOpRXFriZtmVc48Se7IQ61p4DSAXVobnDeEkAE=",
   "27.3.4.7": "sha256-3D+j36vNio0REx02bJ/dYey/nTojZuQSnzIWBIOch1U=",
   "27.3.4.8": "sha256-s40YSNhkoacSnLyZxF4tpivw1b9bnq/XHuNz8IvdjQI=",
+  "27.3.4.9": "sha256-PISjGuGdmlAL9SD58G9nZEFQ6+mL/FpTnJA5bw0Gi0g=",
   "28.0": "sha256-ZqND4bOp0vUkBKznhojwsN3MygDf3I7OLkR05EUnSRg=",
   "28.0.1": "sha256-eWDDreijr7RRmr6sVNuGpQ0qmynN4FTsiBXB8DOWKr4=",
   "28.1": "sha256-rR31Zj7c2eNf608HhLNlrGnVQN/Nymug6EcPfeNHfqk=",