ci: use bitcoind version 28.0

Author: jp1ac4

.cirrus.yml

@@ -96,10 +96,10 @@ task:
       export IS_NOT_BITCOIND_24=0
     else
       # Download the bitcoind binary
-      curl -O https://bitcoincore.org/bin/bitcoin-core-26.0/bitcoin-26.0-x86_64-linux-gnu.tar.gz
-      echo "23e5ab226d9e01ffaadef5ffabe8868d0db23db952b90b0593652993680bb8ab bitcoin-26.0-x86_64-linux-gnu.tar.gz" | sha256sum -c
-      tar -xzf bitcoin-26.0-x86_64-linux-gnu.tar.gz
-      export BITCOIND_PATH=bitcoin-26.0/bin/bitcoind
+      curl -O https://bitcoincore.org/bin/bitcoin-core-28.0/bitcoin-28.0-x86_64-linux-gnu.tar.gz
+      echo "7fe294b02b25b51acb8e8e0a0eb5af6bbafa7cd0c5b0e5fcbb61263104a82fbc bitcoin-28.0-x86_64-linux-gnu.tar.gz" | sha256sum -c
+      tar -xzf bitcoin-28.0-x86_64-linux-gnu.tar.gz
+      export BITCOIND_PATH=bitcoin-28.0/bin/bitcoind
     fi
 
     if [ "$BITCOIN_BACKEND_TYPE" = "electrs" ]; then