Run tests and packaging on ubuntu-latest

Ubuntu 20.04 is no longer supported by GitHub runners.

Note that Tarantool versions < 2.11 are too old and not available on
ubuntu-latest so they're removed from the test matrix. Instead we add
all Tarantool 3.x versions released so far.

Author: locker

.github/workflows/package_test.yml

@@ -19,7 +19,7 @@ jobs:
           - dist: fedora
             version: 36
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Check out repo

.github/workflows/test_on_push.yaml

@@ -11,9 +11,9 @@ jobs:
       github.event_name == 'pull_request' && github.event.pull_request.head.repo.owner.login != 'tarantool'
     strategy:
       matrix:
-        tarantool: ["1.10", "2.6", "2.7", "2.8", "2.10", "2.11", "3.0"]
+        tarantool: ["2.11", "3.0", "3.1", "3.2", "3.3", "3.4"]
       fail-fast: false
-    runs-on: [ubuntu-20.04]
+    runs-on: [ubuntu-latest]
     steps:
       - uses: actions/checkout@master
       - uses: tarantool/setup-tarantool@v3