ci: install Tarantool 2.10 with GitHub Actions

After update [1] it is possible to install Tarantool 2.10 and nightly
releases with setup-tarantool tools. This patch uses it to install
release Tarantool 2.10 and nightly Tarantool 2.x.

1. tarantool/setup-tarantool@6c88e71

Author: DifferentialOrange

.github/workflows/testing.yml

@@ -25,7 +25,7 @@ jobs:
         tarantool:
           - '1.10'
           - '2.8'
-          - '2.x-latest'
+          - '2.10'
         python:
           - '3.6'
           - '3.7'
@@ -35,6 +35,8 @@ jobs:
         msgpack-deps:
           # latest msgpack will be installed as a part of requirements.txt
           - ''
+        tarantool-nightly:
+          - false
 
         # Adding too many elements to three-dimentional matrix results in
         # too many test cases. It causes GitHub webpages to fail with 
@@ -53,22 +55,20 @@ jobs:
           - tarantool: '2.8'
             python: '3.10'
             msgpack-deps: 'msgpack==1.0.4'
+          - tarantool: '2'
+            python: '3.10'
+            msgpack-deps: ''
+            tarantool-nightly: true
 
     steps:
       - name: Clone the connector
         uses: actions/checkout@v2
 
       - name: Install tarantool ${{ matrix.tarantool }}
-        if: matrix.tarantool != '2.x-latest'
         uses: tarantool/setup-tarantool@v1
         with:
           tarantool-version: ${{ matrix.tarantool }}
-
-      - name: Install latest tarantool 2.x
-        if: matrix.tarantool == '2.x-latest'
-        run: |
-          curl -L https://tarantool.io/pre-release/2/installer.sh | sudo bash
-          sudo apt install -y tarantool tarantool-dev
+          tarantool-nightly: ${{ matrix.tarantool-nightly }}
 
       - name: Setup Python for tests
         uses: actions/setup-python@v2
@@ -196,6 +196,7 @@ jobs:
         tarantool:
           - '1.10'
           - '2.8'
+          - '2.10'
         python:
           - '3.10'