chore(upgrades): Bump versions to match other services (spinnaker#2075)

Updates dependencies such as:
* Kotlin to 1.5.32
* Kork to 7.220.0
* MySQL test version to 8.0.36
* Gradle to 7.6.1

chore(dependencies): Autobump spinnakerGradleVersion (spinnaker#2073)

Co-authored-by: root <root@d877509078f3>

chore(dependencies): Autobump fiatVersion (spinnaker#2043)

Co-authored-by: root <root@6389cc6c6704>

chore(build): Build docker images for multiple architectures (spinnak…

…er#2041)

Motivation:
Allow running & experimenting with Spinnaker locally on Macbok M1.

Relevant docs:
https://github.com/docker/build-push-action/blob/master/docs/advanced/multi-platform.md

Similar MR:
spinnaker/rosco#886

chore(ci): Mergify - merge Autobumps on release-* (spinnaker#2034) (s…

…pinnaker#2038)

And request review for failed autobump builds on master and release branches.

Lastly, remove Travis CI related rule. It's not used.

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
(cherry picked from commit 04f77fb)

Co-authored-by: kskewes-sf <[email protected]>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

chore(ci): Mergify - merge Autobumps on release-* (spinnaker#2034) (s…

…pinnaker#2037)

And request review for failed autobump builds on master and release branches.

Lastly, remove Travis CI related rule. It's not used.

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
(cherry picked from commit 04f77fb)

Co-authored-by: kskewes-sf <[email protected]>

chore(dependencies): Autobump fiatVersion (spinnaker#2032)

Co-authored-by: root <root@5c3ba05c7b78>

chore(dependencies): Autobump fiatVersion (spinnaker#2028)

Co-authored-by: root <root@578dc0f8e569>

chore(dependencies): Autobump fiatVersion (spinnaker#2021)

* chore(dependencies): Autobump fiatVersion

* fix(test): keep up with Permissions changes from spinnaker/fiat#854

Co-authored-by: root <root@5172a85ba55e>
Co-authored-by: David Byron <[email protected]>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

chore(dependencies): Autobump korkVersion (spinnaker#2020)

Co-authored-by: root <root@bd79cd7081e3>