Ignore otel major/minor updates in dependabot

[khrm]

Otel deps must move with knative/pkg; independent bumps are unmergeable.

Changes

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Release Notes

NONE

[khrm]

/kind misc
/assign @jkhelil @pratap0007

[jkhelil]

/approve

[tekton-robot]

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 25.40%. Comparing base (89d6463) to head (77beacb).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3792   +/-   ##
=======================================
  Coverage   25.40%   25.40%           
=======================================
  Files         449      449           
  Lines       23477    23477           
=======================================
  Hits         5964     5964           
  Misses      16822    16822           
  Partials      691      691           

Flag	Coverage Δ
unit-tests	25.40% <ø> (ø)

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[pratap0007]

/lgtm