[PATCH 1/2] GitHub Actions: upgrade to Python 3.9

[Nicolas Iooss <nicolas.iooss@xxxxxxx>]

Signed-off-by: Nicolas Iooss <nicolas.iooss@xxxxxxx>
---
 .github/workflows/run_tests.yml | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 6f280de8ff4d..d889b5d55604 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -10,25 +10,26 @@ jobs:
       matrix:
         compiler: [gcc, clang]
         python-ruby-version:
-          - {python: 3.8, ruby: 2.7}
-          - {python: 3.8, ruby: 2.7, other: test-flags-override}
-          - {python: 3.8, ruby: 2.7, other: test-debug}
-          - {python: 3.8, ruby: 2.7, other: linker-bfd}
-          - {python: 3.8, ruby: 2.7, other: linker-gold}
+          - {python: 3.9, ruby: 2.7}
+          - {python: 3.9, ruby: 2.7, other: test-flags-override}
+          - {python: 3.9, ruby: 2.7, other: test-debug}
+          - {python: 3.9, ruby: 2.7, other: linker-bfd}
+          - {python: 3.9, ruby: 2.7, other: linker-gold}
           # Test several Python versions with the latest Ruby version
+          - {python: 3.8, ruby: 2.7}
           - {python: 3.7, ruby: 2.7}
           - {python: 3.6, ruby: 2.7}
           - {python: 3.5, ruby: 2.7}
           - {python: pypy3, ruby: 2.7}
           # Test several Ruby versions with the latest Python version
-          - {python: 3.8, ruby: 2.6}
-          - {python: 3.8, ruby: 2.5}
-          - {python: 3.8, ruby: 2.4}
+          - {python: 3.9, ruby: 2.6}
+          - {python: 3.9, ruby: 2.5}
+          - {python: 3.9, ruby: 2.4}
         exclude:
           - compiler: clang
-            python-ruby-version: {python: 3.8, ruby: 2.7, other: linker-bfd}
+            python-ruby-version: {python: 3.9, ruby: 2.7, other: linker-bfd}
           - compiler: clang
-            python-ruby-version: {python: 3.8, ruby: 2.7, other: linker-gold}
+            python-ruby-version: {python: 3.9, ruby: 2.7, other: linker-gold}
 
     steps:
     - uses: actions/checkout@v2
-- 
2.29.2