Remove and replace some EF bootnodes

[skylenet]

• Removed all azure bootnodes. The same has been done in geth: params: remove EF azure bootnodes ethereum/go-ethereum#26828
• Replace 2 already deprecated AWS bootnodes with the Hetzner ones.

[holgerd77]

@skylenet thanks a lot, will review soon! 🙏 🙂

[codecov]

Codecov Report

Merging #2576 (131da11) into master (ecb62e5) will increase coverage by 0.20%.
The diff coverage is n/a.

❗ Current head 131da11 differs from pull request most recent head 6b6e108. Consider uploading reports for the commit 6b6e108 to get more accurate results

Additional details and impacted files

Flag	Coverage Δ
block	90.13% <ø> (-0.29%)	⬇️
blockchain	90.40% <ø> (ø)
client	87.68% <ø> (+0.72%)	⬆️
common	95.82% <ø> (+0.08%)	⬆️
devp2p	91.70% <ø> (ø)
ethash	∅ <ø> (∅)
evm	79.31% <ø> (-0.09%)	⬇️
rlp	∅ <ø> (?)
statemanager	89.61% <ø> (ø)
trie	90.36% <ø> (ø)
tx	94.16% <ø> (-0.17%)	⬇️
util	84.50% <ø> (ø)
vm	83.87% <ø> (-0.68%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

[holgerd77]

Rebased this via UI.

@skylenet sorry sorry sorry, this totally got forgotten. 😬 Will merge soon.

[holgerd77]

LGTM

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