Upgrade napalm to 4.0.0

[johannaengland]

Fixes the tests not running due to incompatible dependencies.

Release notes from napalm: https://github.com/napalm-automation/napalm/releases

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[codecov]

Codecov Report

Merging #2508 (b43bd68) into master (aa35e2a) will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2508      +/-   ##
==========================================
+ Coverage   53.02%   53.05%   +0.03%     
==========================================
  Files         554      554              
  Lines       40292    40292              
==========================================
+ Hits        21363    21376      +13     
+ Misses      18929    18916      -13     

Impacted Files	Coverage Δ
python/nav/ipdevpoll/pool.py	89.92% <0.00%> (+5.03%)	⬆️

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[lunkwill42]

What is the exact nature of the failing tests? Upgrading napalm to the next major version seems an awfully big step to just try getting tests to pass.

Testing on master now, I don't have any failing tests - rather, I'm unable to have pip-compile build a complete requirements manifest, because of some third party dependency changes. It seems to be easily resolved by employing the backtracking dependency resolver of pip-compile (i.e. the "normal" mode doesn't actually allow for installing older versions of any dependencies to make the whole manifest compatible).

[github-actions]

Test results

     12 files       12 suites   11m 30s ⏱️
3 096 tests 3 000 ✔️   96 💤 0 ❌
8 763 runs  8 475 ✔️ 288 💤 0 ❌

Results for commit b43bd68.

[lunkwill42]

I've submitted #2509 as an alternative to this. I do not like upgrading to a new major version of a dependency when our code hasn't changed - and I'm not confident we have automated tests that will cover any compatibility problems with a new major version of napalm.