test: update Travis-CI matrix pypy version to 3.6-7.3.1

diff --git a/.travis.yml b/.travis.yml
index f546439060f658b4b04109fc8db042270d16b9bf..7bdb4e4d2b635ad4225ac6b307a448af357da2b5 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -46,7 +46,7 @@ jobs:
       arch: arm64
       services: docker
       env: TOX_ENV=py38-full BUILD_WHEEL=1 CIBW_BUILD=cp38-manylinux_aarch64
-    - python: pypy3.5-5.10.1
+    - python: pypy3.6-7.3.1
       # Pypy is a lot slower due to jit warmup costs, so don't run the "full"
       # test config there.
       env: TOX_ENV=pypy3