[Infra] Ignore major/minor Docker updates (open-telemetry#6326)

Author: martincostello

.github/dependabot.yml

@@ -13,27 +13,47 @@ updates:
       day: "wednesday"
     labels:
       - "infra"
+    ignore:
+      - dependency-name: "*"
+        update-types:
+          - "version-update:semver-major"
+          - "version-update:semver-minor"
   - package-ecosystem: "docker"
     directory: "examples/MicroserviceExample/WorkerService"
     schedule:
       interval: "weekly"
       day: "wednesday"
     labels:
       - "infra"
+    ignore:
+      - dependency-name: "*"
+        update-types:
+          - "version-update:semver-major"
+          - "version-update:semver-minor"
   - package-ecosystem: "docker"
     directory: "test/OpenTelemetry.Exporter.OpenTelemetryProtocol.Tests/IntegrationTest"
     schedule:
       interval: "weekly"
       day: "wednesday"
     labels:
       - "infra"
+    ignore:
+      - dependency-name: "*"
+        update-types:
+          - "version-update:semver-major"
+          - "version-update:semver-minor"
   - package-ecosystem: "docker"
     directory: "test/OpenTelemetry.Instrumentation.W3cTraceContext.Tests"
     schedule:
       interval: "weekly"
       day: "wednesday"
     labels:
       - "infra"
+    ignore:
+      - dependency-name: "*"
+        update-types:
+          - "version-update:semver-major"
+          - "version-update:semver-minor"
   - package-ecosystem: "dotnet-sdk"
     directory: "/"
     schedule: