ci(release): add riscv64-linux release target

Author: QaidVoid

.github/workflows/nightly.yaml

@@ -37,6 +37,10 @@ jobs:
               NAME: aarch64-linux,
               TARGET: aarch64-unknown-linux-musl,
             }
+          - {
+              NAME: riscv64-linux,
+              TARGET: riscv64gc-unknown-linux-musl
+            }
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.github/workflows/release.yaml

@@ -23,6 +23,10 @@ jobs:
               NAME: aarch64-linux,
               TARGET: aarch64-unknown-linux-musl,
             }
+          - {
+              NAME: riscv64-linux,
+              TARGET: riscv64gc-unknown-linux-musl
+            }
     steps:
       - name: Checkout
         uses: actions/checkout@v4