Fix version tests (#4329)

Tests had checks for python version number, expecting it to be only
single digits, which was failing for me on 3.6.10 and might fail
in the future with Python 3.10.

I adjusted it to expect minor and patch version to be of multiple digits.

tests/func/test_version.py

@@ -17,7 +17,7 @@ def test_info_in_repo(scm_init, tmp_dir, caplog):
     assert main(["version"]) == 0
 
     assert re.search(r"DVC version: \d+\.\d+\.\d+.*", caplog.text)
-    assert re.search(r"Platform: Python \d\.\d\.\d on .*", caplog.text)
+    assert re.search(r"Platform: Python \d\.\d+\.\d+ on .*", caplog.text)
     assert re.search(r"Supports: .*", caplog.text)
     assert re.search(r"Cache types: .*", caplog.text)
 
@@ -61,7 +61,7 @@ def test_info_outside_of_repo(tmp_dir, caplog):
     assert main(["version"]) == 0
 
     assert re.search(r"DVC version: \d+\.\d+\.\d+.*", caplog.text)
-    assert re.search(r"Platform: Python \d\.\d\.\d on .*", caplog.text)
+    assert re.search(r"Platform: Python \d\.\d+\.\d+ on .*", caplog.text)
     assert re.search(r"Supports: .*", caplog.text)
     assert not re.search(r"Cache types: .*", caplog.text)
     assert "Repo:" not in caplog.text