chore: add v3 branch as renovate base branch

[n1ru4l]

We want dependency updates in the v3 branch.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 94dae4e

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[github-actions]

✅ Benchmark Results

     ✓ no_errors
     ✓ expected_result

     checks.........................: 100.00% ✓ 176784      ✗ 0    
     data_received..................: 24 MB   784 kB/s
     data_sent......................: 10 MB   339 kB/s
     http_req_blocked...............: avg=1.34µs   min=800ns   med=1.1µs   max=2.64ms  p(90)=1.7µs   p(95)=2.1µs   
     http_req_connecting............: avg=27ns     min=0s      med=0s      max=2.44ms  p(90)=0s      p(95)=0s      
   ✓ http_req_duration..............: avg=255.22µs min=164µs   med=231.8µs max=16.23ms p(90)=300µs   p(95)=329.8µs 
       { expected_response:true }...: avg=255.22µs min=164µs   med=231.8µs max=16.23ms p(90)=300µs   p(95)=329.8µs 
     http_req_failed................: 0.00%   ✓ 0           ✗ 88392
     http_req_receiving.............: avg=22.1µs   min=11.8µs  med=20.7µs  max=15.97ms p(90)=27.8µs  p(95)=30.6µs  
     http_req_sending...............: avg=9.99µs   min=4.4µs   med=7µs     max=4.57ms  p(90)=13.4µs  p(95)=14.9µs  
     http_req_tls_handshaking.......: avg=0s       min=0s      med=0s      max=0s      p(90)=0s      p(95)=0s      
     http_req_waiting...............: avg=223.12µs min=144.2µs med=202µs   max=15.23ms p(90)=262.2µs p(95)=292.25µs
     http_reqs......................: 88392   2946.202632/s
     iteration_duration.............: avg=333.49µs min=218.3µs med=307µs   max=18.23ms p(90)=389.4µs p(95)=422.1µs 
     iterations.....................: 88392   2946.202632/s
     vus............................: 0       min=0         max=1  
     vus_max........................: 1       min=1         max=1