Downgrade OpenTelemetry to 1.51.0

opentelemetry-exporter-sender-okhttp and
opentelemetry-sdk-extension-jaeger-remote-sampler in OpenTelemetry
1.52.0 started depending on OkHttp 5.x. That introduces compatibility
issues that need some time to resolve, so downgrade for the moment.
While we don't depend on either of those modules, BOMs can make sure
versions are consistent across modules, and we don't want to encourage
our users to downgrade our dependencies.

See also
open-telemetry/opentelemetry-java#8001

Author: ejona86

gradle/libs.versions.toml

@@ -85,11 +85,11 @@ opencensus-contrib-grpc-metrics = { module = "io.opencensus:opencensus-contrib-g
 opencensus-exporter-stats-stackdriver = { module = "io.opencensus:opencensus-exporter-stats-stackdriver", version.ref = "opencensus" }
 opencensus-exporter-trace-stackdriver = { module = "io.opencensus:opencensus-exporter-trace-stackdriver", version.ref = "opencensus" }
 opencensus-impl = { module = "io.opencensus:opencensus-impl", version.ref = "opencensus" }
-opentelemetry-api = "io.opentelemetry:opentelemetry-api:1.52.0"
-opentelemetry-exporter-prometheus = "io.opentelemetry:opentelemetry-exporter-prometheus:1.52.0-alpha"
-opentelemetry-gcp-resources = "io.opentelemetry.contrib:opentelemetry-gcp-resources:1.48.0-alpha"
-opentelemetry-sdk-extension-autoconfigure = "io.opentelemetry:opentelemetry-sdk-extension-autoconfigure:1.52.0"
-opentelemetry-sdk-testing = "io.opentelemetry:opentelemetry-sdk-testing:1.52.0"
+opentelemetry-api = "io.opentelemetry:opentelemetry-api:1.51.0"
+opentelemetry-exporter-prometheus = "io.opentelemetry:opentelemetry-exporter-prometheus:1.51.0-alpha"
+opentelemetry-gcp-resources = "io.opentelemetry.contrib:opentelemetry-gcp-resources:1.47.0-alpha"
+opentelemetry-sdk-extension-autoconfigure = "io.opentelemetry:opentelemetry-sdk-extension-autoconfigure:1.51.0"
+opentelemetry-sdk-testing = "io.opentelemetry:opentelemetry-sdk-testing:1.51.0"
 perfmark-api = "io.perfmark:perfmark-api:0.27.0"
 protobuf-java = { module = "com.google.protobuf:protobuf-java", version.ref = "protobuf" }
 protobuf-java-util = { module = "com.google.protobuf:protobuf-java-util", version.ref = "protobuf" }