Merge pull request #22962 from backstage/freben/less-pinning

do less renovate pinning - starting out with docker images

.github/workflows/ci.yml

@@ -155,7 +155,7 @@ jobs:
     name: Test ${{ matrix.node-version }}
     services:
       postgres16:
-        image: postgres:16@sha256:39d764950f22cfe878661247bb15cb344169dc3d55c9d4676303a2ef8675c057
+        image: postgres:16
         env:
           POSTGRES_PASSWORD: postgres
         options: >-
@@ -166,7 +166,7 @@ jobs:
         ports:
           - 5432/tcp
       postgres12:
-        image: postgres:12@sha256:7a4c3f690fa767db8aaa4a9da3870037535307cc7f8f1880f1d7275a1be29b4d
+        image: postgres:12
         env:
           POSTGRES_PASSWORD: postgres
         options: >-
@@ -177,7 +177,7 @@ jobs:
         ports:
           - 5432/tcp
       mysql8:
-        image: mysql:8@sha256:343b82684a6b05812c58ca20ccd3af8bcf8a5f48b1842f251c54379bfce848f9
+        image: mysql:8
         env:
           MYSQL_ROOT_PASSWORD: root
         options: >-

.github/workflows/deploy_packages.yml

@@ -23,7 +23,7 @@ jobs:
 
     services:
       postgres16:
-        image: postgres:16@sha256:39d764950f22cfe878661247bb15cb344169dc3d55c9d4676303a2ef8675c057
+        image: postgres:16
         env:
           POSTGRES_PASSWORD: postgres
         options: >-
@@ -34,7 +34,7 @@ jobs:
         ports:
           - 5432/tcp
       postgres12:
-        image: postgres:12@sha256:7a4c3f690fa767db8aaa4a9da3870037535307cc7f8f1880f1d7275a1be29b4d
+        image: postgres:12
         env:
           POSTGRES_PASSWORD: postgres
         options: >-
@@ -45,7 +45,7 @@ jobs:
         ports:
           - 5432/tcp
       mysql8:
-        image: mysql:8@sha256:343b82684a6b05812c58ca20ccd3af8bcf8a5f48b1842f251c54379bfce848f9
+        image: mysql:8
         env:
           MYSQL_ROOT_PASSWORD: root
         options: >-

.github/workflows/verify_e2e-linux.yml

@@ -19,7 +19,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres:12@sha256:7a4c3f690fa767db8aaa4a9da3870037535307cc7f8f1880f1d7275a1be29b4d
+        image: postgres:12
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres