Remove macos-13 from actions

Author: w1th0utnam3

.github/workflows/build.yml

@@ -59,7 +59,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        runner: [ubuntu-latest, ubuntu-24.04-arm, macos-14, macos-13, windows-latest]
+        runner: [ubuntu-latest, ubuntu-24.04-arm, macos-14, windows-latest]
     steps:
       - uses: actions/checkout@v4
         with:

.github/workflows/pysplashsurf_CI.yml

@@ -187,8 +187,6 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - runner: macos-13
-            target: x86_64
           - runner: macos-14
             target: aarch64
     steps: