Restrict annotation functionality to versions of Julia it works on (#79)

* Restrict annotation functionality to versions of Julia it works on

see #76

* Update README.md

README.md

@@ -45,7 +45,8 @@ jobs:
 You can add this workflow to your repository by placing it in a file called `test.yml` in the folder `.github/workflows/`. [More info here](https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions).
 
 Here, setting `annotate: true` causes GitHub "annotations" to appear when reviewing the PR, pointing to failing tests, if any.
-Note that this impacts stacktraces in case of errors (see #76).
+This functionality is only enabled on Julia 1.8 (even if `annotate` is set to `true`), since currently it does not work on other Julia versions (see #76).
+
 By default, `annotate` is set to false, but that may change in future releases of this action.
 ### Prefixing the Julia command
 

action.yml

@@ -41,7 +41,8 @@ runs:
       shell: bash
     - name: Install dependencies in their own (shared) environment
       run: |
-        if VERSION > v"1.8pre"
+        # Functionality only currently works on a narrow range of Julia versions... see #76
+        if v"1.8pre" < VERSION < v"1.9.0-beta3"
           using Pkg
           Pkg.activate("tests-logger-env"; shared=true)
           Pkg.add(Pkg.PackageSpec(name="GitHubActions", version="0.1"))