Update build.yml to fix build for armv5 without fpu

.github/workflows/Delete.yml

@@ -0,0 +1,16 @@
+name: Delete old workflow runs
+on:
+  schedule:
+    - cron: '0 0 1 * *'
+# Run monthly, at 00:00 on the 1st day of month.
+
+jobs:
+  del_runs:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Delete workflow runs
+        uses: GitRML/delete-workflow-runs@main
+        with:
+          token: ${{ secrets.AUTH_PAT }}
+          repository: ${{ github.repository }}
+          retain_days: 30

.github/workflows/build.yml

@@ -37,7 +37,7 @@ jobs:
           - { goos: linux, goarch: amd64, goamd64: v1, output: amd64-compatible, test: test }
           - { goos: linux, goarch: amd64, goamd64: v3, output: amd64 }
           - { goos: linux, goarch: arm64, output: arm64 }
-          - { goos: linux, goarch: arm, goarm: '5', output: armv5 }
+          - { goos: linux, goarch: arm, goarm: '5,softfloat', output: armv5 }
           - { goos: linux, goarch: arm, goarm: '6', output: armv6 }
           - { goos: linux, goarch: arm, goarm: '7', output: armv7 }
           - { goos: linux, goarch: mips, mips: hardfloat, output: mips-hardfloat }
@@ -485,4 +485,4 @@ jobs:
             linux/arm64
             linux/arm/v7
           tags: ${{ steps.meta_release.outputs.tags }}
-          labels: ${{ steps.meta_release.outputs.labels }}
+          labels: ${{ steps.meta_release.outputs.labels }}