Pin geth version to 1.14.8 (#22)

Part of [Create bridge channel in go-nitro](https://www.notion.so/Create-bridge-channel-in-go-nitro-22ce80a0d8ae4edb80020a8f250ea270)

Reviewed-on: #22
Reviewed-by: ashwin <ashwin@noreply.git.vdb.to>
Co-authored-by: Nabarun <nabarun@deepstacksoft.com>
Co-committed-by: Nabarun <nabarun@deepstacksoft.com>

.gitea/workflows/triggers/publish-fixturenet-eth-images

@@ -1,2 +1,2 @@
 # Change this file to trigger the job publish-fixturenet-eth-images.yml
-4
+5

stack-orchestrator/container-build/cerc-fixturenet-eth-geth/Dockerfile

@@ -1,5 +1,5 @@
 FROM cerc/fixturenet-eth-genesis-postmerge:local as fnetgen
-FROM ethereum/client-go:release-1.14 as geth
+FROM ethereum/client-go:v1.14.8 as geth
 
 # Using the same golang image as used to build geth: https://github.com/cerc-io/go-ethereum/blob/HEAD/Dockerfile
 FROM golang:1.21-alpine as delve

stack-orchestrator/stacks/fixturenet-plugeth/stack.yml

@@ -6,7 +6,7 @@ repos:
   - git.vdb.to/cerc-io/plugeth-statediff
   - git.vdb.to/cerc-io/lighthouse
   - git.vdb.to/cerc-io/ipld-eth-db
-  - git.vdb.to/cerc-io/ipld-eth-server
+  - git.vdb.to/cerc-io/ipld-eth-server@v5
 containers:
   - cerc/plugeth-statediff
   - cerc/plugeth