Update CI

Author: adam-fowler

.github/workflows/ci.yml

@@ -4,15 +4,14 @@ on:
   push:
     branches:
     - main
-    - 2.x.x
     paths:
     - '**.swift'
     - '**.yml'
   pull_request:
-    branches:
-    - main
-    - 2.x.x
   workflow_dispatch:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-ci
+  cancel-in-progress: true
 
 jobs:
   linux:
@@ -23,17 +22,15 @@ jobs:
         image:
           - 'swift:5.9'
           - 'swift:5.10'
+          - 'swift:6.0'
         postgres-image:
           - 'postgres:16'
           - 'postgres:14'
-          - 'postgres:12'
         include:
           - postgres-image: postgres:16
             postgres-auth: scram-sha-256
           - postgres-image: postgres:14
             postgres-auth: md5
-          - postgres-image: postgres:12
-            postgres-auth: trust
     container:
       image: ${{ matrix.image }}
       volumes: [ 'pgrunshare:/var/run/postgresql' ]
@@ -68,6 +65,7 @@ jobs:
           -ignore-filename-regex="\/Benchmarks\/" \
           -instr-profile .build/debug/codecov/default.profdata > info.lcov
     - name: Upload to codecov.io
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v4
       with:
-        file: info.lcov
+        files: info.lcov
+        token: ${{ secrets.CODECOV_TOKEN }}