Add new Ubuntu build jobs to CI

[FranciscoPombal]

Raise minimum libtorrent version to 1.2.14 (2.0.4)

- Also update vcpkg to latest commit: includes libtorrent 1.2.14,
Qt 5.15.2, and Qt 6.1.0

Commit split to #15093.

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GitHub Actions CI: update workflow

• Add more Ubuntu jobs with libtorrent RC_1_2 branch HEAD, latest RC_2_0
  tag and RC_2_0 branch HEAD.

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libtorrent 1.2.x was just updated to 1.2.14 on vcpkg, so we can bump the version.
New jobs were added to the GitHub Actions CI to bring it up to par with Travis, which I just noticed has RC_2_0 jobs.

Similar jobs for Windows and macOS will be added later once I get libtorrent 2.0 into vcpkg.

Meanwhile, this latest vcpkg commit also includes Qt6, so we will be ready for the switch. @glassez Once this PR is merged, you should rebase your experimental qt6 branch on top of master to ease experimentation.

[FranciscoPombal]

new CI is working correctly now.

[glassez]

@FranciscoPombal
Please put commits into separate PRs.

[FranciscoPombal]

@glassez

Well, I thought these 2 commits would be good candidates for the same PR. In any case, the one bumping libtorrent was split into #15093. They are technically independent, so they can be merged in any order, but it would make a bit more sense to merge #15093 first IMO.

[glassez]

@FranciscoPombal
Why do we really need both latest release and latest commit builds for each libtorrent branch?

[FranciscoPombal]

@glassez

@FranciscoPombal
Why do we really need both latest release and latest commit builds for each libtorrent branch?

Why not? It costs us nothing and is more defensive. If we do anything that triggers some warning/deprecation/error in the latest commits of libtorrent, we'll know about it even before we bump the minimum required tagged version.

[FranciscoPombal]

Windows CI failure looks spurious.

[sledgehammer999]

FYI, I have a PPA recipes that daily imports and builds RC_1_2.
I don't know if adding the PPA will produce faster CI builds. You could check that if you want. This is just an info comment.

PPA: https://launchpad.net/~qbittorrent-team/+archive/ubuntu/qbt-libtorrent-travisci

PS: Unfortunately I can't do the same for RC_2_0 because it uses git submodules and launchpad doesn't import that correctly.

[FranciscoPombal]

@glassez @sledgehammer999

FYI, I have a PPA recipes that daily imports and builds RC_1_2.
I don't know if adding the PPA will produce faster CI builds. You could check that if you want. This is just an info comment.

PPA: https://launchpad.net/~qbittorrent-team/+archive/ubuntu/qbt-libtorrent-travisci

PS: Unfortunately I can't do the same for RC_2_0 because it uses git submodules and launchpad doesn't import that correctly.

Thanks, but I think that at least for now, this is the simplest and most flexible way - it is simple to setup both RC_1_2 and RC_2_0 builds.

Since #15093 is merged, this is now ready as well.

[FranciscoPombal]

@sledgehammer999 @Chocobo1

Any further comments? This is ready.

[FranciscoPombal]

@Chocobo1 @glassez ping.

[FranciscoPombal]

@sledgehammer999 @glassez @Chocobo1 ping.

[xavier2k6]

Superseded by #15340