Test on Go 1.12

Since 1.12 is what we specify in go.mod, and therefore implicitly is what
we promise to work with, we should ensure that we don't introduce changes
which break this promise (e.g. as 1bf832c).

Signed-off-by: Sebastiaan van Stijn <[email protected]>

Author: tomasaschan

.github/workflows/ci.yaml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go: ["1.21", "1.22", "1.23"]
+        go: ["1.12", "1.21", "1.22", "1.23"]
 
     steps:
       - name: Checkout repository