chore(ci): perform a dry-run release on each PR

.github/workflows/publish.yml

@@ -1,21 +1,30 @@
 name: Publish crates
 
 on:
+  # We only want to perform dry runs when this workflow runs on PRs.
+  pull_request:
+    branches: [master]
   workflow_dispatch:
     inputs:
       acvm-ref:
         description: The acvm reference to checkout
         required: true
+      publish:
+        description: Publish packages to crates.io
+        type: boolean
+        required: true
 
 jobs:
   publish:
     name: Publish in order
     runs-on: ubuntu-latest
+    env:
+      DRY_RUN_FLAG:  ${{ (inputs.publish && '') || '--dry-run' }}
     steps:
       - name: Checkout sources
         uses: actions/checkout@v3
         with:
-          ref: ${{ inputs.acvm-ref }}
+          ref: ${{ inputs.acvm-ref || github.ref }}
 
       - name: Setup toolchain
         uses: dtolnay/rust-toolchain@master
@@ -25,30 +34,30 @@ jobs:
       # These steps are in a specific order so crate dependencies are updated first
       - name: Publish acir_field
         run: |
-          cargo publish --package acir_field
+          cargo publish $DRY_RUN_FLAG --package acir_field
         env:
           CARGO_REGISTRY_TOKEN: ${{ secrets.ACVM_CRATES_IO_TOKEN }}
 
       - name: Publish brillig_vm
         run: |
-          cargo publish --package brillig_vm
+          cargo publish $DRY_RUN_FLAG --package brillig_vm
         env:
           CARGO_REGISTRY_TOKEN: ${{ secrets.ACVM_CRATES_IO_TOKEN }}
 
       - name: Publish acir
         run: |
-          cargo publish --package acir
+          cargo publish $DRY_RUN_FLAG --package acir
         env:
           CARGO_REGISTRY_TOKEN: ${{ secrets.ACVM_CRATES_IO_TOKEN }}
 
       - name: Publish acvm_stdlib
         run: |
-          cargo publish --package acvm_stdlib
+          cargo publish $DRY_RUN_FLAG --package acvm_stdlib
         env:
           CARGO_REGISTRY_TOKEN: ${{ secrets.ACVM_CRATES_IO_TOKEN }}
 
       - name: Publish acvm
         run: |
-          cargo publish --package acvm
+          cargo publish $DRY_RUN_FLAG --package acvm
         env:
           CARGO_REGISTRY_TOKEN: ${{ secrets.ACVM_CRATES_IO_TOKEN }}

.github/workflows/release.yml

@@ -31,4 +31,4 @@ jobs:
         with:
           workflow: publish.yml
           ref: master
-          inputs: '{ "acvm-ref": "${{ needs.release-please.outputs.tag-name }}" }'
+          inputs: '{ "acvm-ref": "${{ needs.release-please.outputs.tag-name }}", "publish": true }'