Abinet: fix ValueError: Blur limit must be odd when centered=True. Got: (3, 6)

[hugotong6425]

Motivation

In response to #1794

Modification

change blur_limit config of Albumentation MotionBlur form 6 to 7 to fix ValueError: Blur limit must be odd when centered=True. Got: (3, 6)

Checklist

Before PR:

• I have read and followed the workflow indicated in the CONTRIBUTING.md to create this PR.
• Pre-commit or linting tools indicated in CONTRIBUTING.md are used to fix the potential lint issues.
• Bug fixes are covered by unit tests, the case that causes the bug should be added in the unit tests.
• New functionalities are covered by complete unit tests. If not, please add more unit test to ensure the correctness.
• The documentation has been modified accordingly, including docstring or example tutorials.

After PR:

• If the modification has potential influence on downstream or other related projects, this PR should be tested with some of those projects.
• CLA has been signed and all committers have signed the CLA in this PR.

[gaotongxiao]

Thanks!