Merge pull request swagger-api#10253 from swagger-api/prepare-release…

…-3.0.20

prepare release 3.0.20

Merge pull request swagger-api#10251 from swagger-api/prepare-release…

…-2.4.14

prepare release 2.4.14

Merge pull request swagger-api#10151 from swagger-api/prepare-release…

…-3.0.19

prepare release 3.0.19

Merge pull request swagger-api#10149 from swagger-api/prepare-release…

…-2.4.13

prepare release 2.4.13

Merge pull request swagger-api#10061 from swagger-api/prepare-release…

…-3.0.18

Prepare release 3.0.18

Merge pull request swagger-api#10056 from swagger-api/prepare-release…

…-3.0.17

prepare release 3.0.17

Merge pull request swagger-api#9986 from swagger-api/prepare-release-…

…3.0.16

prepare release 3.0.16

Merge pull request swagger-api#9984 from swagger-api/prepare-release-…

…2.4.12

prepare release 2.4.12

Merge pull request swagger-api#9955 from swagger-api/prepare-release-…

…3.0.15

prepare release 3.0.15

Merge pull request swagger-api#9952 from swagger-api/prepare-release-…

…2.4.11

prepare release 2.4.11