Bump ca.uhn.hapi.fhir:org.hl7.fhir.utilities in /prime-router (#8844)

Bumps ca.uhn.hapi.fhir:org.hl7.fhir.utilities from 5.6.92 to 5.6.971.

---
updated-dependencies:
- dependency-name: ca.uhn.hapi.fhir:org.hl7.fhir.utilities
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Brick Green <86254221+brick-green@users.noreply.github.com>

prime-router/build.gradle.kts

@@ -748,7 +748,7 @@ dependencies {
     implementation("io.github.linuxforhealth:hl7v2-fhir-converter:1.0.19")
     implementation("ca.uhn.hapi.fhir:hapi-fhir-structures-r4:6.2.5")
     // Pin org.hl7.fhir.utilities to ca.uhn.hapi.fhir:org.hl7.fhir.utilities@5.6.92 until ca.uhn.hapi.fhir:hapi-fhir-structures-r4 can be updated
-    implementation("ca.uhn.hapi.fhir:org.hl7.fhir.utilities:5.6.92")
+    implementation("ca.uhn.hapi.fhir:org.hl7.fhir.utilities:5.6.971")
     implementation("ca.uhn.hapi:hapi-base:2.3")
     implementation("ca.uhn.hapi:hapi-structures-v251:2.3")
     implementation("com.googlecode.libphonenumber:libphonenumber:8.13.5")