go.mod: bump all deps

Bump all transitive and direct dependencies.

Signed-off-by: Casey Callendrello <c1@caseyc.net>

vendor/go.opencensus.io/trace/doc.go

@@ -18,24 +18,23 @@ Package trace contains support for OpenCensus distributed tracing.
 The following assumes a basic familiarity with OpenCensus concepts.
 See http://opencensus.io
 
-
-Exporting Traces
+# Exporting Traces
 
 To export collected tracing data, register at least one exporter. You can use
 one of the provided exporters or write your own.
 
-    trace.RegisterExporter(exporter)
+	trace.RegisterExporter(exporter)
 
 By default, traces will be sampled relatively rarely. To change the sampling
 frequency for your entire program, call ApplyConfig. Use a ProbabilitySampler
 to sample a subset of traces, or use AlwaysSample to collect a trace on every run:
 
-    trace.ApplyConfig(trace.Config{DefaultSampler: trace.AlwaysSample()})
+	trace.ApplyConfig(trace.Config{DefaultSampler: trace.AlwaysSample()})
 
 Be careful about using trace.AlwaysSample in a production application with
 significant traffic: a new trace will be started and exported for every request.
 
-Adding Spans to a Trace
+# Adding Spans to a Trace
 
 A trace consists of a tree of spans. In Go, the current span is carried in a
 context.Context.
@@ -44,8 +43,8 @@ It is common to want to capture all the activity of a function call in a span. F
 this to work, the function must take a context.Context as a parameter. Add these two
 lines to the top of the function:
 
-    ctx, span := trace.StartSpan(ctx, "example.com/Run")
-    defer span.End()
+	ctx, span := trace.StartSpan(ctx, "example.com/Run")
+	defer span.End()
 
 StartSpan will create a new top-level span if the context
 doesn't contain another span, otherwise it will create a child span.