message: add openexr feature flag to rust ci workflow
diff: @@ -10,7 +10,7 @@ jobs:
  strategy:
  matrix:
  rust: ["1.34.2", stable, beta, nightly]
  - features: [ gif, jpeg, png, pnm, tga, dds, tiff, webp, hdr, farbfeld, '' ]
  + features: [ gif, jpeg, png, pnm, tga, dds, tiff, webp, hdr, openexr, farbfeld, '' ]
  steps:
  - uses: actions/checkout@v2
  - uses: actions-rs/toolchain@v1
  