build: update CI to build against bitcoind 23

.github/workflows/main.yml

@@ -16,7 +16,7 @@ env:
   # go needs absolute directories, using the $HOME variable doesn't work here.
   GOCACHE: /home/runner/work/go/pkg/build
   GOPATH: /home/runner/work/go
-  BITCOIN_VERSION: "22.0"
+  BITCOIN_VERSION: "23.0"
 
   # If you change this value, please change it in the following files as well:
   # /.travis.yml

scripts/install_bitcoind.sh

@@ -2,7 +2,7 @@
 
 set -ev
 
-BITCOIND_VERSION=${BITCOIN_VERSION:-22.0}
+BITCOIND_VERSION=${BITCOIN_VERSION:-23.0}
 
 docker pull lightninglabs/bitcoin-core:$BITCOIND_VERSION
 CONTAINER_ID=$(docker create lightninglabs/bitcoin-core:$BITCOIND_VERSION)