chore(deps): update docker/dockerfile docker tag to v1.19

[renovate]

Note

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This notice will be removed on 2025-10-07.

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This PR contains the following updates:

Package	Type	Update	Change
docker/dockerfile	syntax	minor	1.18 -> 1.19

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[github-actions]

🐋 This PR was built and pushed to the following Docker images:

Image Names: ghcr.io/graphql-hive/router

Platforms: linux/amd64,linux/arm64

Image Tags: ghcr.io/graphql-hive/router:pr-465 ghcr.io/graphql-hive/router:sha-5f7b296

Docker metadata

{
"buildx.build.ref": "builder-fd1aca56-1e2d-49e8-888e-dfacddf2f366/builder-fd1aca56-1e2d-49e8-888e-dfacddf2f3660/1ojt3sxzwpra4cj3pnl3np37j",
"containerimage.descriptor": {
  "mediaType": "application/vnd.oci.image.index.v1+json",
  "digest": "sha256:9ea10719624ba11050bab4fb39d169a0ec303ab3596a4e35e7ee6dd7c95efa3e",
  "size": 1609
},
"containerimage.digest": "sha256:9ea10719624ba11050bab4fb39d169a0ec303ab3596a4e35e7ee6dd7c95efa3e",
"image.name": "ghcr.io/graphql-hive/router:pr-465,ghcr.io/graphql-hive/router:sha-5f7b296"
}

[github-actions]

✅ k6-benchmark results

     ✓ response code was 200
     ✓ no graphql errors
     ✓ valid response structure

     █ setup

     checks.........................: 100.00% ✓ 234735      ✗ 0    
     data_received..................: 6.9 GB  228 MB/s
     data_sent......................: 92 MB   3.1 MB/s
     http_req_blocked...............: avg=3.75µs   min=701ns   med=1.74µs  max=16.33ms  p(90)=2.47µs  p(95)=2.88µs  
     http_req_connecting............: avg=965ns    min=0s      med=0s      max=3.13ms   p(90)=0s      p(95)=0s      
     http_req_duration..............: avg=18.68ms  min=1.99ms  med=17.75ms max=194.98ms p(90)=25.83ms p(95)=28.94ms 
       { expected_response:true }...: avg=18.68ms  min=1.99ms  med=17.75ms max=194.98ms p(90)=25.83ms p(95)=28.94ms 
     http_req_failed................: 0.00%   ✓ 0           ✗ 78265
     http_req_receiving.............: avg=143.73µs min=25.04µs med=39.23µs max=149ms    p(90)=84.12µs p(95)=357.47µs
     http_req_sending...............: avg=23.94µs  min=5.43µs  med=10.51µs max=35.54ms  p(90)=15.85µs p(95)=25.88µs 
     http_req_tls_handshaking.......: avg=0s       min=0s      med=0s      max=0s       p(90)=0s      p(95)=0s      
     http_req_waiting...............: avg=18.51ms  min=1.93ms  med=17.64ms max=75.67ms  p(90)=25.59ms p(95)=28.66ms 
     http_reqs......................: 78265   2603.559454/s
     iteration_duration.............: avg=19.16ms  min=4.58ms  med=18.11ms max=314.05ms p(90)=26.28ms p(95)=29.43ms 
     iterations.....................: 78245   2602.894135/s
     vus............................: 50      min=50        max=50 
     vus_max........................: 50      min=50        max=50