ci(l2): fix tag_release workflow (#5156)

**Motivation**

#3429 updated how SP1
verification key generation works, but the tag_release workflow was not
updated to take this into account.

Author: ilitteri

.github/workflows/pr-main_l2.yaml

@@ -198,7 +198,7 @@ jobs:
         run: |
           cd crates/l2
           make build-prover-exec
-          mkdir -p prover/src/guest_program/src/sp1/out && touch prover/src/guest_program/src/sp1/out/riscv32im-succinct-zkvm-vk
+          mkdir -p prover/src/guest_program/src/sp1/out && touch prover/src/guest_program/src/sp1/out/riscv32im-succinct-zkvm-vk-bn254 && touch prover/src/guest_program/src/sp1/out/riscv32im-succinct-zkvm-vk-u32
 
       - name: Build test
         run: |

.github/workflows/tag_release.yaml

@@ -133,7 +133,8 @@ jobs:
         run: |
           mkdir -p ./verification_keys
           mv crates/l2/prover/src/guest_program/src/risc0/out/riscv32im-risc0-vk verification_keys/ethrex-riscv32im-risc0-vk
-          mv crates/l2/prover/src/guest_program/src/sp1/out/riscv32im-succinct-zkvm-vk verification_keys/ethrex-riscv32im-succinct-zkvm-vk
+          mv crates/l2/prover/src/guest_program/src/sp1/out/riscv32im-succinct-zkvm-vk-bn254 verification_keys/ethrex-riscv32im-succinct-zkvm-vk-bn254
+          mv crates/l2/prover/src/guest_program/src/sp1/out/riscv32im-succinct-zkvm-vk-u32 verification_keys/ethrex-riscv32im-succinct-zkvm-vk-u32
 
       - name: Upload artifact
         uses: actions/upload-artifact@v4