fix(workflows): support legacy game servers on older Ubuntu/Debian runners

Multiple game servers have glibc compatibility requirements that prevent
them from running on Ubuntu 24.04:

- bfv, bf1942: Require Ubuntu <= 22.04 or Debian <= 12 (glibc 2.31)
- btl, onset: Require Ubuntu <= 20.04 or Debian <= 11 (glibc 2.31)

Changes:
- Add runner field to details-check matrix generation
- Map legacy servers to appropriate ubuntu-XX.04 LTS runners
- Modern servers continue on ubuntu-latest (24.04)
- Update details-check.yml to use dynamic runner from matrix

This ensures all server tests pass in CI without breaking modern server
testing on current GitHub Actions runners.

.github/workflows/details-check-generate-matrix.sh

@@ -14,10 +14,26 @@ while read -r line; do
 	export gamename
 	distro=$(echo "$line" | awk -F, '{ print $4 }')
 	export distro
+	# Legacy servers that require older Ubuntu/Debian versions due to glibc compatibility
+	case "${shortname}" in
+		bfv|bf1942)
+			# Requires Ubuntu <= 22.04 or Debian <= 12 (glibc 2.31 compatible)
+			runner="ubuntu-22.04"
+			;;
+		btl|onset)
+			# Requires Ubuntu <= 20.04 or Debian <= 11 (glibc 2.31 compatible)
+			runner="ubuntu-20.04"
+			;;
+		*)
+			runner="ubuntu-latest"
+			;;
+	esac
 	{
 		echo -n "{";
 		echo -n "\"shortname\":";
 		echo -n "\"${shortname}\"";
+		echo -n ",\"runner\":";
+		echo -n "\"${runner}\"";
 		echo -n "},";
 	} >> "shortnamearray.json"
 done < <(tail -n +2 serverlist.csv)

.github/workflows/details-check.yml

@@ -37,7 +37,7 @@ jobs:
     if: github.repository_owner == 'GameServerManagers'
     needs: create-matrix
     continue-on-error: true
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.runner }}
 
     strategy:
       matrix: ${{ fromJSON(needs.create-matrix.outputs.matrix) }}