ci: add more ignore rules to dependabot

[milas]

What I did
Reduce PR spam for dependencies that we manually manage.

Related issue

• build(deps): bump go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc from 1.4.1 to 1.16.0 #10681
• build(deps): bump go.opentelemetry.io/otel/exporters/otlp/otlptrace from 1.4.1 to 1.16.0 #10680
• build(deps): bump go.opentelemetry.io/otel/trace from 1.15.1 to 1.16.0 #10679
• build(deps): bump go.opentelemetry.io/otel/sdk from 1.4.1 to 1.16.0 #10678
• build(deps): bump github.com/containerd/containerd from 1.6.21 to 1.7.2 #10654
• build(deps): bump go.opentelemetry.io/otel from 1.15.1 to 1.16.0 #10601
• build(deps): bump github.com/containerd/containerd from 1.6.21 to 1.7.1 #10548
• etc 😉

(not mandatory) A picture of a cute animal, if possible in relation to what you did

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.08 ⚠️

Comparison is base (599723f) 58.91% compared to head (3fe665b) 58.84%.

Additional details and impacted files

@@            Coverage Diff             @@
##               v2   #10694      +/-   ##
==========================================
- Coverage   58.91%   58.84%   -0.08%     
==========================================
  Files         111      111              
  Lines        9709     9709              
==========================================
- Hits         5720     5713       -7     
- Misses       3401     3407       +6     
- Partials      588      589       +1     

see 2 files with indirect coverage changes

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[glours]

LGTM