[aws-lambda] Improve script (#259)

- make the script more resilient to changes in the page by using column names,
- use the product release releaseDate as the date, else the date the version was first found, else the current date (previously the date the version was first found was not used),
- move some code to the Product class.

releases/aws-lambda.json

@@ -1,14 +1,33 @@
 {
+  "python3.12": "2023-12-17",
+  "java21": "2023-11-17",
+  "nodejs20.x": "2023-11-15",
+  "provided.al2023": "2023-11-10",
+  "python3.11": "2023-07-27",
+  "ruby3.2": "2023-06-07",
+  "java17": "2023-04-27",
+  "python3.10": "2023-04-18",
+  "nodejs18.x": "2022-11-18",
+  "dotnet7": "2022-11-15",
+  "nodejs16.x": "2022-05-12",
+  "dotnet6": "2022-02-24",
+  "python3.9": "2021-08-16",
   "nodejs14.x": "2021-02-03",
   "nodejs12.x": "2021-02-03",
   "dotnet5.0": "2020-12-02",
+  "provided.al2": "2020-08-12",
+  "java8.al2": "2020-08-12",
   "dotnetcore3.1": "2020-03-31",
   "ruby2.7": "2020-02-19",
+  "python3.8": "2019-11-18",
+  "java11": "2019-11-18",
   "nodejs10.x": "2019-05-15",
   "ruby2.5": "2018-11-29",
+  "provided": "2018-11-29",
   "python3.7": "2018-11-19",
   "dotnetcore2.1": "2018-07-09",
   "nodejs8.10": "2018-04-02",
+  "go1.x": "2018-01-15",
   "dotnetcore2.0": "2018-01-15",
   "nodejs4.3-edge": "2017-07-17",
   "python3.6": "2017-04-18",
@@ -16,5 +35,6 @@
   "dotnetcore1.0": "2016-12-01",
   "nodejs4.3": "2016-04-07",
   "python2.7": "2015-10-08",
+  "java8": "2015-06-15",
   "nodejs": "2014-11-13"
 }