Backport #7640 into `stable2412` from lexnv.

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Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com>
Co-authored-by: Alexandru Vasile <alexandru.vasile@parity.io>

This PR backports:
- https://github.com/paritytech/polkadot-sdk/pull/7488

cc @EgorPopelyaev



Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

Backport #7423 into `stable2412` from franciscoaguirre.

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Co-authored-by: Francisco Aguirre <franciscoaguirreperez@gmail.com>

Backport #7243 into `stable2412` from dhirajs0.

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Co-authored-by: Dhiraj Sah <dhiraj.kumar2990@gmail.com>

Backport fix for the changelog generation introduced in #6444

Backport #7504 into `stable2412` from alexggh.

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Co-authored-by: Alexandru Gheorghe <49718502+alexggh@users.noreply.github.com>

Backport #7367 into `stable2412` from iulianbarbu.

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Signed-off-by: Iulian Barbu <iulian.barbu@parity.io>
Co-authored-by: Iulian Barbu <14218860+iulianbarbu@users.noreply.github.com>
Co-authored-by: Iulian Barbu <iulian.barbu@parity.io>

Backport #7451 into `stable2412` from skunert.

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Co-authored-by: Sebastian Kunert <skunert49@gmail.com>

Backport #7437 into `stable2412` from serban300.

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Co-authored-by: Serban Iorga <serban@parity.io>

Backport #7446 into `stable2412` from serban300.

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Co-authored-by: Serban Iorga <serban@parity.io>
Co-authored-by: cmd[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Backport #7365 into `stable2412` from vgantchev.

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Co-authored-by: Valery Gantchev <v@lery.dev>

Backport #7383 into `stable2412` from bkontur.

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Co-authored-by: Branislav Kontur <bkontur@gmail.com>

Backport #7307 into `stable2412` from bkontur.

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Co-authored-by: Branislav Kontur <bkontur@gmail.com>

This PR contains a fix for the rc-build release pipeline. The problem
was, that for the deb package build were all the artefacts downloaded
and merged together, what could lead to the issue, that the polkadot
linux binary was overwritten with the macos one.

Backport #7344 into `stable2412` from dmitry-markin.

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Co-authored-by: Dmitry Markin <dmitry@markin.tech>

Backport #7322 into `stable2412` from bkontur.

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Co-authored-by: Branislav Kontur <bkontur@gmail.com>

This is a partial backport of #6825 and #7205. Only the node-side minor
changes were ported. However, this creates forward compatibility of the
omni-node from 2412 with runtimes built after #6825.

Backport #7222 into `stable2412` from lexnv.

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Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com>
Co-authored-by: Alexandru Vasile <alexandru.vasile@parity.io>

Backport #7099 into `stable2412` from lexnv.

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Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com>
Co-authored-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Egor_P <egor@parity.io>

Fix the CI issue on the stable2412 branch by deleting the
`bandersnatch-experimental` dependant code. Also fix some other CI
checks.

The Bandersnatch VRFs crate is not on crates-io, hence why it is not
included in the release
https://github.com/paritytech/polkadot-sdk/blob/a843d15e

/substrate/primitives/core/Cargo.toml#L73

The only upstream crate that depends on this is
`sp-consensus-sassafras`, but we dont release that. So hopefully CI goes
green.

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Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>