[ci] Add ability to skip CIRCT tests in nightly

Add an environment option to skip CIRCT testing.  This is intended to be
used if the previous job knows that tests don't need to be run (or for
testing of actions with a slightly faster turnaround).

Expose this option as a workflow_dispatch input to make this easier to test.

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@sifive.com>

.github/workflows/uploadFirrtlReleaseArtifacts.yml

@@ -13,6 +13,13 @@ on:
           - linux
           - macos
           - windows
+      runTests:
+        type: choice
+        description: Run CIRCT tests
+        default: false
+        options:
+          - true
+          - false
   # Run every day at 0700 UTC which is:
   #   - 0000 PDT / 2300 PST
   #   - 0300 EDT / 0200 EST
@@ -134,9 +141,25 @@ jobs:
           echo "\`\`\`json" >> $GITHUB_STEP_SUMMARY
           cat runners.json | jq >> $GITHUB_STEP_SUMMARY
           echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
+
+          case ${{ github.event_name }} in
+            workflow_dispatch)
+              ENV='{"runTests":${{ inputs.runTests }}}'
+            ;;
+            *)
+              ENV='{"runTests":true}'
+            ;;
+          esac
+          echo environment=$ENV >> $GITHUB_OUTPUT
+
+          echo "Environment Configuration:" >> $GITHUB_STEP_SUMMARY
+          echo "\`\`\`json" >> $GITHUB_STEP_SUMMARY
+          echo $ENV | jq >> $GITHUB_STEP_SUMMARY
+          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
     outputs:
       build_configs: ${{ steps.build-json-payloads.outputs.build_configs }}
       runners: ${{ steps.build-json-payloads.outputs.runners }}
+      environment: ${{ steps.build-json-payloads.outputs.environment }}
 
   publish:
     needs:
@@ -146,6 +169,7 @@ jobs:
         build_config: ${{ fromJSON(needs.choose-matrix.outputs.build_configs) }}
         runner: ${{ fromJSON(needs.choose-matrix.outputs.runners) }}
     runs-on: ${{ matrix.runner.runner }}
+    env: ${{ fromJSON(needs.choose-matrix.outputs.environment) }}
     steps:
       # Clone the CIRCT repo and its submodules. Do shallow clone to save clone
       # time.
@@ -197,7 +221,8 @@ jobs:
             -DCMAKE_EXPORT_COMPILE_COMMANDS=OFF ${{ matrix.runner.cont }}
             -DCMAKE_INSTALL_PREFIX="$(pwd)/../install"
 
-      - name: Build and Test CIRCT
+      - name: Test CIRCT
+        if: env.runTests == 'true'
         run: |
           ${{ matrix.runner.setup }}
           ninja -C build check-circt check-circt-unit