chore: update formatting / fix go mod declaration

[danyalprout]

Description

Update the formatting of the message. Commit message will look like:

    chore: updated node-reth, nethermind, op-geth, optimism

    ### Dependency Updates
    **node-reth** - v0.1.9:  [diff](https://github.com/base/node-reth/compare/v0.1.8...v0.1.9)
    **nethermind** - 1.34.1:  [diff](https://github.com/NethermindEth/nethermind/compare/1.34.0...1.34.1)
    **op-geth** - v1.101603.1:  [diff](https://github.com/ethereum-optimism/op-geth/compare/v1.101602.3...v1.101603.1)
    **optimism** - op-node/v1.14.1:  [diff](https://github.com/ethereum-optimism/optimism/compare/op-node/v1.13.7...op-node/v1.14.1)```

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1

[danyalprout]

Formatted example:

Dependency Updates

node-reth - v0.1.9: diff
nethermind - 1.34.1: diff
op-geth - v1.101603.1: diff
optimism - op-node/v1.14.1: diff

[henridevieux]

While you're at it - can you set the type / risk / severity in the PR description? Or do you want a human to set those before merging (looks required by infra)