Fix proc-macro test

Author: febo

.github/workflows/publish-rust.yml

@@ -176,8 +176,8 @@ jobs:
         shell: bash
         run: |
           set +e # toml crashes the whole shell if it fails to find the key
-          result=$(toml get "${{ inputs.package-path }}/Cargo.toml" lib.crate-type)
-          if [[ "$result" == *"proc-macro"* ]]; then
+          result=$(toml get "${{ inputs.package-path }}/Cargo.toml" lib.proc-macro)
+          if [[ "$result" == *"yes"* ]]; then
             echo "is_proc_macro=true" >> "$GITHUB_OUTPUT"
           else
             echo "is_proc_macro=false" >> "$GITHUB_OUTPUT"