do not remove no-op pebble support for non-64bit arch and use execution-spec-tests v1.0.6

Author: ganeshvanahalli

build/checksums.txt

@@ -1,9 +1,9 @@
 # This file contains sha256 checksums of optional build dependencies.
 
-# version:spec-tests 1.0.5
+# version:spec-tests 1.0.6
 # https://github.com/ethereum/execution-spec-tests/releases
-# https://github.com/ethereum/execution-spec-tests/releases/download/v1.0.5/
-d4fd06a0e5f94beb970f3c68374b38ef9de82d4be77517d326bcf739c3cbf3a2  fixtures_develop.tar.gz
+# https://github.com/ethereum/execution-spec-tests/releases/download/v1.0.6/
+485af7b66cf41eb3a8c1bd46632913b8eb95995df867cf665617bbc9b4beedd1  fixtures_develop.tar.gz
 
 # version:golang 1.21.3
 # https://go.dev/dl/

ethdb/pebble/pebble.go

@@ -14,6 +14,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build (arm64 || amd64) && !openbsd
+
 // Package pebble implements the key-value database layer based on pebble.
 package pebble
 

ethdb/pebble/pebble_non64bit.go

@@ -0,0 +1,13 @@
+//go:build !((arm64 || amd64) && !openbsd)
+
+package pebble
+
+import (
+	"errors"
+
+	"github.com/ethereum/go-ethereum/ethdb"
+)
+
+func New(file string, cache int, handles int, namespace string, readonly bool, ephemeral bool) (ethdb.Database, error) {
+	return nil, errors.New("pebble is not supported on this platform")
+}

ethdb/pebble/pebble_test.go

@@ -14,6 +14,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build (arm64 || amd64) && !openbsd
+
 package pebble
 
 import (