Bump actionmailer from 7.0.8.4 to 7.0.8.5 in /examples/stacks/rails/blog #6508

Job	Run time
Test Flake Build	1m 25s
golangci-lint (ubuntu-latest)	41s
Spell Check with Typos	6s
golangci-lint (macos-13)	3m 36s
build-devbox (ubuntu-latest)	28s
build-devbox (macos-13)	1m 21s
test-nix-versions (ubuntu-latest, 2.15.1)	38s
auto-nix-install (ubuntu-latest, true)	47s
test-nix-versions (ubuntu-latest, 2.16.1)	39s
auto-nix-install (ubuntu-latest, false)	36s
test-nix-versions (ubuntu-latest, 2.17.0)	33s
test (not-main, ubuntu-latest, project-tests-only, 2.12.0)	6m 47s
auto-nix-install (macos-13, true)	3m 29s
test-nix-versions (ubuntu-latest, 2.18.0)	33s
test (not-main, ubuntu-latest, project-tests-only, 2.19.2)	8m 6s
auto-nix-install (macos-13, false)	3m 49s
test-nix-versions (ubuntu-latest, 2.19.2)	34s
test (not-main, ubuntu-latest, project-tests-only, 2.20.1)	6m 59s
test-nix-versions (ubuntu-latest, 2.24.7)	49s
test (not-main, ubuntu-latest, project-tests-off, 2.12.0)	8m 8s
test-nix-versions (macos-13, 2.15.1)	3m 4s
test (not-main, ubuntu-latest, project-tests-off, 2.19.2)	7m 10s
test-nix-versions (macos-13, 2.16.1)	2m 31s
test-nix-versions (macos-13, 2.17.0)	2m 55s
test (not-main, ubuntu-latest, project-tests-off, 2.20.1)	7m 26s
test-nix-versions (macos-13, 2.18.0)	2m 57s
test-nix-versions (macos-13, 2.19.2)	2m 53s
test-nix-versions (macos-13, 2.24.7)	4m 8s
	1h 23m 8s

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