github: Bump Go versions

Author: bep

.github/workflows/test.yml

@@ -1,13 +1,13 @@
 on:
   push:
-    branches: [ main ]
+    branches: [ master ]
   pull_request:
 name: Test
 jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.18.x]
+        go-version: [1.20.x,1.21.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:
@@ -36,11 +36,11 @@ jobs:
     - name: Upload coverage
       if: success() && matrix.platform == 'ubuntu-latest'
       run: |
-        curl https://keybase.io/codecovsecurity/pgp_keys.asc | gpg --no-default-keyring --keyring trustedkeys.gpg --import # One-time step
+        curl https://keybase.io/codecovsecurity/pgp_keys.asc | gpg --no-default-keyring --keyring trustedkeys.gpg --import # One-time >
         curl -Os https://uploader.codecov.io/latest/linux/codecov
         curl -Os https://uploader.codecov.io/latest/linux/codecov.SHA256SUM
         curl -Os https://uploader.codecov.io/latest/linux/codecov.SHA256SUM.sig
         gpgv codecov.SHA256SUM.sig codecov.SHA256SUM
         shasum -a 256 -c codecov.SHA256SUM
         chmod +x codecov
-        ./codecov 
+        ./codecov