Downgrade lifecycle version to 0.17.2 for some builder images

Since these builder images contain buildpacks that are using
Buildpack API versions no longer supported in lifecycle 0.18.0+:
https://github.com/buildpacks/lifecycle/releases/tag/v0.18.0
https://github.com/buildpacks/lifecycle#supported-apis

builder-classic-22/builder.toml

@@ -6,7 +6,10 @@ build-image = "heroku/heroku:22-cnb-build"
 run-image = "heroku/heroku:22-cnb"
 
 [lifecycle]
-version = "0.18.1"
+# We have to use an older lifecycle version in this builder image since lifecycle 0.18.0
+# dropped support for Buildpack API versions <0.7, and cnb-shim is currently using v0.4:
+# https://github.com/heroku/cnb-shim/issues/69
+version = "0.17.2"
 
 [[buildpacks]]
   id = "heroku/builder-eol-warning"

buildpacks-20/builder.toml

@@ -6,7 +6,10 @@ build-image = "heroku/heroku:20-cnb-build"
 run-image = "heroku/heroku:20-cnb"
 
 [lifecycle]
-version = "0.18.1"
+# We have to use an older lifecycle version in this builder image since lifecycle 0.18.0
+# dropped support for Buildpack API versions <0.7, and cnb-shim is currently using v0.4:
+# https://github.com/heroku/cnb-shim/issues/69
+version = "0.17.2"
 
 [[buildpacks]]
   id = "heroku/builder-eol-warning"

salesforce-functions/builder.toml

@@ -6,7 +6,12 @@ build-image = "heroku/heroku:22-cnb-build"
 run-image = "heroku/heroku:22-cnb"
 
 [lifecycle]
-version = "0.18.1"
+# We have to use an older lifecycle version in this builder image since lifecycle 0.18.0
+# dropped support for Buildpack API versions <0.7, and:
+# - heroku/nodejs-function is still using the old Bash based NPM CNB (which is using Buildpack API 0.6)
+# - we know of at least one custom buildpack that's also using a legacy Buildpack API:
+#   https://github.com/CSGAMERSServices/puppeteer-heroku-buildpack
+version = "0.17.2"
 
 [[buildpacks]]
   id = "heroku/java-function"