ci: enforce gofumpt instead of gofmt

[altergui]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 9595515452

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 89 of 107 (83.18%) changed or added relevant lines in 29 files are covered.
• 5 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.05%) to 61.364%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
apiclient/blockchain.go	0	1	0.0%
apiclient/election.go	2	3	66.67%
data/ipfs/init.go	1	2	50.0%
log/log.go	0	1	0.0%
test/testcommon/testvoteproof/voteproof.go	5	6	83.33%
apiclient/account.go	4	6	66.67%
db/internal/dbtest/dbtest.go	0	2	0.0%
subpub/subpub.go	0	2	0.0%
vochain/cometbft.go	5	8	62.5%
api/wallet.go	0	4	0.0%

Files with Coverage Reduction	New Missed Lines	%
cmd/end2endtest/dynamicensus.go	1	77.33%
subpub/subpub.go	1	0.0%
vochain/start.go	1	71.96%
vochain/indexer/indexer.go	2	67.9%

Totals
Change from base Build 9595431203:	0.05%
Covered Lines:	16011
Relevant Lines:	26092

---

💛 - Coveralls

[altergui]

finally all pending PRs are merged (the only ones left are draft PRs, all mine) so i'd approve & merge this one

[p4u]

fix conflicts please and we can merge it @altergui

[altergui]

fix conflicts please and we can merge it @altergui

🤥

please approve, and i'll take care of merging (just in case there are conflicts, so i can solve them before merging)