chore: bump blockscout version (#787)

Currently the 6.7.2 introduced reth support.

Even tho the workaround (below) is still in the code, it fixes some
indexing issue. (Specifically something with the transaction receipts
decoding).

Still active (and if removed, still not working) workaround:
```
 "ETHEREUM_JSONRPC_VARIANT": "erigon"
            if el_client_name == "erigon" or el_client_name == "reth"
            else el_client_name,
```
Co-authored-by: Keszey Dániel <keszeyd@MacBook-Pro.local>

src/blockscout/blockscout_launcher.star

@@ -2,7 +2,7 @@ shared_utils = import_module("../shared_utils/shared_utils.star")
 constants = import_module("../package_io/constants.star")
 postgres = import_module("github.com/kurtosis-tech/postgres-package/main.star")
 
-IMAGE_NAME_BLOCKSCOUT = "blockscout/blockscout:6.6.0"
+IMAGE_NAME_BLOCKSCOUT = "blockscout/blockscout:6.7.2"
 IMAGE_NAME_BLOCKSCOUT_VERIF = "ghcr.io/blockscout/smart-contract-verifier:v1.6.0"
 
 SERVICE_NAME_BLOCKSCOUT = "blockscout"