(cherry picked from commit 674c9af)

Now that we have community builds of graalvm landed in #99631, both
clj-kondo and babashka can depend on those versions of graalvm rather
than the one that requires building from source - this can be built in
hydra, and generally is much easier to build and test.

(cherry picked from commit 3341f6c)

with #99631 and #102693 merged, it's possible to bump the babashka
version again.

However recent versions of babashka depend on java11 features and I
spoke in Slack with the project lead and this java11 dependency will
exist going forward.

(cherry picked from commit 172cbb8)

(cherry picked from commit 045c2ab)

…ka_clj-kondo

[20.09] backport of graalvm{8,11}-ce, babashka clj kondo