chore: bump core to v1.15.1 (#1534)

This PR bumps `celestia-app` to using `v.1.15.1` which includes a patch
to fix `SignedBlockEvents` which were causing validator hash mismatches.

go.mod

@@ -186,5 +186,5 @@ require (
 replace (
 	github.com/cosmos/cosmos-sdk => github.com/celestiaorg/cosmos-sdk v1.8.0-sdk-v0.46.7
 	github.com/gogo/protobuf => github.com/regen-network/protobuf v1.3.3-alpha.regen.1
-	github.com/tendermint/tendermint => github.com/celestiaorg/celestia-core v1.15.0-tm-v0.34.23
+	github.com/tendermint/tendermint => github.com/celestiaorg/celestia-core v1.15.1-tm-v0.34.23
 )

go.sum

@@ -186,8 +186,8 @@ github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46f
 github.com/bwesterb/go-ristretto v1.2.0/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0=
 github.com/c-bata/go-prompt v0.2.2/go.mod h1:VzqtzE2ksDBcdln8G7mk2RX9QyGjH+OVqOCSiVIqS34=
 github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ=
-github.com/celestiaorg/celestia-core v1.15.0-tm-v0.34.23 h1:BHvn41IHOtvHeX1VZqO/xBFIHj93llcw9ZQfNxyVRlI=
-github.com/celestiaorg/celestia-core v1.15.0-tm-v0.34.23/go.mod h1:nL+vkAMKy/A8wWemWqMwBy4pOGWYYbboAVTEe3N5gIU=
+github.com/celestiaorg/celestia-core v1.15.1-tm-v0.34.23 h1:1moC5rXA7to8Neci5KWQcYVjSrGpkKH7dIHIhT8UsYw=
+github.com/celestiaorg/celestia-core v1.15.1-tm-v0.34.23/go.mod h1:nL+vkAMKy/A8wWemWqMwBy4pOGWYYbboAVTEe3N5gIU=
 github.com/celestiaorg/cosmos-sdk v1.8.0-sdk-v0.46.7 h1:EADZy33ufskVIy6Rj6jbi3SOVCeYYo26zUi7iYx+QR0=
 github.com/celestiaorg/cosmos-sdk v1.8.0-sdk-v0.46.7/go.mod h1:vg3Eza9adJJ5Mdx6boz5MpZsZcTZyrfTVYZHyi2zLm4=
 github.com/celestiaorg/merkletree v0.0.0-20210714075610-a84dc3ddbbe4 h1:CJdIpo8n5MFP2MwK0gSRcOVlDlFdQJO1p+FqdxYzmvc=