Update build to use OpenCV 4.9.0

[clnowacki]

Issues:

• Upgrade to OpenCV 4.9 openmpf#1785

Related PRs:

• Update build to use OpenCV 4.9.0 openmpf#1791
• Update build to use OpenCV 4.9.0 openmpf-components#362
• Update build to use OpenCV 4.9.0 openmpf-cpp-component-sdk#123
• Update build to use OpenCV 4.9.0 openmpf-contrib-components#90

---

This change is 

[jrobble]

Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @clnowacki)

a discussion (no related file):
This needs to be updated to OpenCV 4.9: https://github.com/openmpf/openmpf.github.io/blob/develop/docs/docs/Development-Environment-Guide.md

---

[clnowacki]

Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @jrobble)

a discussion (no related file):

Previously, jrobble (Jeff Robble) wrote…

This needs to be updated to OpenCV 4.9: https://github.com/openmpf/openmpf.github.io/blob/develop/docs/docs/Development-Environment-Guide.md

Done.

---

[jrobble]

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @brosenberg42)