Integrate gitlab-ci/bug_fix_branch and 1 more

Commit: https://git.seco.com/yocto_ng/infrastructure/gitlab-ci/-/commit/c01bfd12cf586a59466c1b5baddd525fac32fe6f

Insert missing variables on yocto build pipeline

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Commit: https://git.seco.com/yocto_ng/infrastructure/gitlab-ci/-/commit/079cd7836eea0b485a8e7414a65067f44c164940

Insert bug fix on manifest branch

• Without this fix the branch used for the build is always the kirkstone/develop one