MassInstallAction: Install the Downgrade workflow on this repository (#457)

* Automated commit made by MassInstallAction.jl

* find_root! is not available in early versions of DataStructures

* SimpleTraits permit docstrings only after 0.9.1

Author: Krastanov

.github/workflows/downgrade.yml

@@ -0,0 +1,29 @@
+name: Downgrade
+on:
+  pull_request:
+    branches: [master, main]
+    paths-ignore:
+      - 'docs/**'
+  push:
+    branches: [master, main]
+    paths-ignore:
+      - 'docs/**'
+env:
+  PYTHON: ~
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        version: ['1.10']
+    steps:
+      - uses: actions/checkout@v5
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/julia-downgrade-compat@v2
+        with:
+          skip: Pkg,TOML,InteractiveUtils,Random,LinearAlgebra
+      - uses: julia-actions/cache@v2
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1

Project.toml

@@ -17,12 +17,12 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 [compat]
 ArnoldiMethod = "0.4"
 Distributed = "1"
-DataStructures = "0.17, 0.18, 0.19"
+DataStructures = "0.18, 0.19"
 Inflate = "0.1.3"
 LinearAlgebra = "1"
 Random = "1"
 SharedArrays = "1" 
-SimpleTraits = "0.9"
+SimpleTraits = "0.9.1"
 SparseArrays = "1"
 Statistics = "1"
 julia = "1.10"