chore: add multisig support to upgrade ServiceManager

[JuArce]

This PR

• Slightly modifies the upgrade script to only generate the calldata to send to the multisig wallet
• Writes a guide on how to upgrade the contracts using the multisig

To test

[!Note] Steps on how to deploy and upgrade are available here docs/3_guides/setup_holesky.md Steps on how to use the multisig are available here docs/multisig.md

• Deploy Aligned contracts con sepolia
  • For this, don't forget to change the contracts/scripts/.env variables:

RPC_URL=<a sepolia one>
EXISTING_DEPLOYMENT_INFO_PATH=./script/output/sepolia/eigenlayer_deployment_output.json
DEPLOY_CONFIG_PATH=./script/deploy/config/sepolia/aligned.sepolia.config.json
OUTPUT_PATH=./script/output/sepolia/alignedlayer_deployment_output.json
MULTISIG=true

• Test the upgrade works only with the multisig, following the guide

[github-actions[bot]]

Changes to gas cost

Generated at commit: 9de2e892b0b879b86a6e6299a8bd717e5e2d04c8, compared to commit: 192a535aa39bbad8cada32b9460bf59e33081685

🧾 Summary (10% most significant diffs)

Contract	Method	Avg (+/-)	%
AlignedLayerServiceManager	batchesState receive	+44 ❌ +2,138 ❌	+6.46% +4.76%

---

Full diff report 👇

Contract	Deployment Cost (+/-)	Method	Min (+/-)	%	Avg (+/-)	%	Median (+/-)	%	Max (+/-)	%	# Calls (+/-)
AlignedLayerServiceManager	5,335,578 (+564,365)	batchesState createNewTask disableVerifier enableVerifier isVerifierDisabled receive setDisabledVerifiers	725 (+44) 56,085 (+2,150) 23,911 (+22) 23,803 (-67) 583 (+44) 23,318 (+2,149) 23,801 (+44)	+6.46% +3.99% +0.09% -0.28% +8.16% +10.15% +0.19%	725 (+44) 76,161 (+2,195) 35,504 (+22) 24,447 (-67) 1,249 (+44) 47,015 (+2,138) 34,808 (+44)	+6.46% +2.97% +0.06% -0.27% +3.65% +4.76% +0.13%	725 (+44) 76,249 (+2,198) 35,504 (+22) 24,447 (-67) 583 (+44) 47,202 (+2,138) 34,808 (+44)	+6.46% +2.97% +0.06% -0.27% +8.16% +4.74% +0.13%	725 (+44) 77,095 (+2,225) 47,097 (+22) 25,092 (-67) 2,583 (+44) 47,202 (+2,138) 45,815 (+44)	+6.46% +2.97% +0.05% -0.27% +1.73% +4.74% +0.10%	256 (0) 256 (0) 2 (0) 2 (0) 3 (0) 256 (0) 2 (0)
StrategyManagerMock	1,270,846 (-12)
IndexRegistry	1,086,925 (-12)
BLSApkRegistryHarness	1,837,601 (-12)