update env var check

Author: cgarling

test/runtests.jl

@@ -88,11 +88,9 @@ end
 
 # https://github.com/JuliaVersionControl/Git.jl/issues/51
 @testset "OpenSSH integration" begin
-    is_ci = parse(Bool, strip(get(ENV, "CI", "false")))
-    is_gha = parse(Bool, strip(get(ENV, "GITHUB_ACTIONS", "false")))
-    ssh_privkey = get(ENV, "CI_READONLY_DEPLOYKEY_FOR_CI_TESTSUITE_PRIVATEKEY", nothing)
-    if is_ci && is_gha && !isnothing(ssh_privkey)
-        @info "This is GitHub Actions CI, so running the OpenSSH test..."
+    ssh_privkey = get(ENV, "CI_READONLY_DEPLOYKEY_FOR_CI_TESTSUITE_PRIVATEKEY", "")
+    if !isempty(ssh_privkey)
+        @info "CI private key available, so running the OpenSSH test..."
         mktempdir() do sshprivkeydir
             privkey_filepath = joinpath(sshprivkeydir, "my_private_key")
             open(privkey_filepath, "w") do io