[PROF-10978] Bump minimum Ruby version for heap profiling (#26549)

Due to a Ruby VM bug in older Ruby versions, we're going to require
Ruby 3.1+ as a minimum version for heap profiling, as per
DataDog/dd-trace-rb#4178 .

This PR updates the docs to match this raised requirement.

content/en/profiler/enabling/supported_versions.md

@@ -33,7 +33,7 @@ To collect profile types, use at least the minimum versions summarized in the fo
 | {{< ci-details title="CPU" >}}The time each function/method spent running on the CPU.{{< /ci-details >}}   |                 [JDK&nbsp;8+][17]                 | tracer&nbsp;0.35+ | tracer&nbsp;1.23+ | tracer&nbsp;0.48+ | tracer&nbsp;5.11.0,<br>4.35.0, 3.56.0 | tracer&nbsp;2.15+ | tracer&nbsp;0.71+  | Preview<br>ddprof&nbsp;0.1+ |
 | {{< ci-details title="Exceptions" >}}The number of exceptions raised, including those caught.{{< /ci-details >}}   |                 [JDK&nbsp;8+][17]                 | Python 3.7+ |       |       |       | .NET 5+<br>tracer&nbsp;2.31+ |  tracer&nbsp;0.96+  |       |
 | {{< ci-details title="Allocation" >}}Number and sizes of memory allocations made by each function/method, including allocations which were subsequently freed.{{< /ci-details >}}   |                [JDK&nbsp;11+][17]                 | Python 3.6+<br>tracer&nbsp;0.50+ | tracer&nbsp;1.47+ | tracer 2.3.0+ |       | Preview<br>.NET 6+ and .NET Framework beta (requires Datadog Agent 7.51+ and tracer 3.2+)<br>tracer&nbsp;2.18+ | tracer&nbsp;0.88+ | Preview<br>ddprof&nbsp;0.9.3 |
-| {{< ci-details title="Heap" >}}The amount of heap memory allocated that remains in use.{{< /ci-details >}}   | [JDK&nbsp;11+][17]<br>tracer&nbsp;1.39.0+ | Python 3.6+<br> tracer&nbsp;0.50+ | tracer&nbsp;1.23+ | alpha<br>Ruby 2.7+<br>tracer&nbsp;2.3.0+ | tracer&nbsp;0.23+ | beta<br>.NET 7+<br>tracer&nbsp;2.22+ |       | Preview<br>ddprof&nbsp;0.15+ |
+| {{< ci-details title="Heap" >}}The amount of heap memory allocated that remains in use.{{< /ci-details >}}   | [JDK&nbsp;11+][17]<br>tracer&nbsp;1.39.0+ | Python 3.6+<br> tracer&nbsp;0.50+ | tracer&nbsp;1.23+ | alpha<br>Ruby 3.1+<br>tracer&nbsp;2.3.0+ | tracer&nbsp;0.23+ | beta<br>.NET 7+<br>tracer&nbsp;2.22+ |       | Preview<br>ddprof&nbsp;0.15+ |
 | {{< ci-details title="Wall time" >}}The elapsed time spent in each function/method. Elapsed time includes time when code is running on CPU, waiting for I/O, and anything else that happens while the function/method is running.{{< /ci-details >}}   |                 [JDK&nbsp;8+][17]                 | tracer&nbsp;0.35+ |       | tracer&nbsp;0.48+ | tracer&nbsp;0.23+ | tracer&nbsp;2.7+ | tracer&nbsp;0.71+ |       |
 | {{< ci-details title="Locks" >}}The time each function/method spent waiting for and holding locks, and the number of times each function acquired a lock.{{< /ci-details >}}   |                 [JDK&nbsp;8+][17]                 | tracer&nbsp;0.45+ | tracer&nbsp;1.47+ |      |       | .NET 5+ and .NET Framework beta (requires Datadog Agent 7.51+)<br>tracer&nbsp;2.49+ |       |      |
 | {{< ci-details title="I/O" >}}The time each method spent reading from and writing to files and sockets.{{< /ci-details >}}   |                 [JDK&nbsp;8+][17]                 |       |       |       |       |       |       |       |

content/en/profiler/profile_types.md

@@ -162,11 +162,11 @@ _Requires:_ [Manual enablement][2]
 
 Heap Live Objects (alpha, v2.3.0+)
 : The number of objects allocated by each method in heap memory that have not yet been garbage collected. This is useful for investigating the overall memory usage of your service and identifying potential memory leaks.<br />
-_Requires: Ruby 2.7+_ and [manual enablement][2]
+_Requires: Ruby 3.1+_ and [manual enablement][2]
 
 Heap Live Size (alpha, v2.3.0+)
 : The amount of heap memory allocated by each method that has not yet been garbage collected. This is useful for investigating the overall memory usage of your service and identifying potential memory leaks.<br />
-_Requires: Ruby 2.7+_ and [manual enablement][2]
+_Requires: Ruby 3.1+_ and [manual enablement][2]
 
 [1]: /profiler/enabling/ruby/#requirements
 [2]: /profiler/enabling/ruby/#configuration